src/*.c: Silence a few warnings about unused vars and functions.

* src/image.c (x_bitmap_height, x_bitmap_width) [HAVE_X_WINDOWS]:
* src/sysdep.c (reset_sigio) [!DOS_NT]: Declare conditionally.

* src/keyboard.c (read_decoded_event_from_main_queue): #ifdef out
  variables on Windows.

* src/w32.c (unsetenv): Remove unused var `retval'.
  (emacs_gnutls_pull): Remove unused vars `fdset' and `timeout'.

* src/w32fns.c (Ffile_system_info): Use parenthesis in and/or expression.

* src/w32notify.c (watch_worker): Remove unnecesary var sleep_result.
  (start_watching): Remove unused var `thr'.

* src/w32proc.c (sys_spawnve): Comment out unused vars `first', `last'.
  (find_child_console): Remove unnecesary var `thread_id'.

* src/w32term.c (w32_read_socket): Comment out unused vars `row', `columns'.
  (x_focus_frame): #ifdef 0 unused variable `dpyinfo'.

9 files changed, 40 insertions, 16 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 05c5b42ef90..84cd041c36c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,25 @@
+2014-03-26  Juanma Barranquero  <lekktu@gmail.com>
+
+        * image.c (x_bitmap_height, x_bitmap_width) [HAVE_X_WINDOWS]:
+        * sysdep.c (reset_sigio) [!DOS_NT]: Declare conditionally.
+
+        * keyboard.c (read_decoded_event_from_main_queue): #ifdef out
+        variables on Windows.
+
+        * w32fns.c (Ffile_system_info): Use parenthesis in and/or expression.
+
+        * w32.c (unsetenv): Remove unused var `retval'.
+        (emacs_gnutls_pull): Remove unused vars `fdset' and `timeout'.
+
+        * w32notify.c (watch_worker): Remove unnecesary var sleep_result.
+        (start_watching): Remove unused var `thr'.
+
+        * w32proc.c (sys_spawnve): Comment out unused vars `first', `last'.
+        (find_child_console): Remove unnecesary var `thread_id'.
+
+        * w32term.c (w32_read_socket): Comment out unused vars `row', `columns'.
+        (x_focus_frame): #ifdef 0 unused variable `dpyinfo'.
+
 2014-03-26  Glenn Morris  <rgm@gnu.org>
 
         * filelock.c (Flock_buffer): Doc tweak.
diff --git a/src/image.c b/src/image.c
index d6d5ace509d..6b33e1de8a1 100644
--- a/src/image.c
+++ b/src/image.c
@@ -160,6 +160,7 @@ XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel)
 
 /* Functions to access the contents of a bitmap, given an id.  */
 
+#ifdef HAVE_X_WINDOWS
 static int
 x_bitmap_height (struct frame *f, ptrdiff_t id)
 {
@@ -171,6 +172,7 @@ x_bitmap_width (struct frame *f, ptrdiff_t id)
 {
   return FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].width;
 }
+#endif
 
 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI)
 ptrdiff_t
diff --git a/src/keyboard.c b/src/keyboard.c
index 2b3de6e27c2..439a40f8762 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -2299,8 +2299,10 @@ read_decoded_event_from_main_queue (struct timespec *end_time,
                                     bool *used_mouse_menu)
 {
 #define MAX_ENCODED_BYTES 16
+#ifndef WINDOWSNT
   Lisp_Object events[MAX_ENCODED_BYTES];
   int n = 0;
+#endif
   while (true)
     {
       Lisp_Object nextevt
diff --git a/src/sysdep.c b/src/sysdep.c
index af9f4801cec..b33900062ae 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -603,6 +603,7 @@ init_sigio (int fd)
 #endif
 }
 
+#ifndef DOS_NT
 static void
 reset_sigio (int fd)
 {
@@ -610,6 +611,7 @@ reset_sigio (int fd)
   fcntl (fd, F_SETFL, old_fcntl_flags[fd]);
 #endif
 }
+#endif
 
 void
 request_sigio (void)
diff --git a/src/w32.c b/src/w32.c
index 1ffb6ec171f..95092daa83a 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -2413,7 +2413,6 @@ unsetenv (const char *name)
 {
   char *var;
   size_t name_len;
-  int retval;
 
   if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
     {
@@ -9261,8 +9260,6 @@ ssize_t
 emacs_gnutls_pull (gnutls_transport_ptr_t p, void* buf, size_t sz)
 {
   int n, err;
-  SELECT_TYPE fdset;
-  struct timespec timeout;
   struct Lisp_Process *process = (struct Lisp_Process *)p;
   int fd = process->infd;
 
diff --git a/src/w32fns.c b/src/w32fns.c
index 9dab1408b49..080771f4cca 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -7528,8 +7528,8 @@ If the underlying system call fails, value is nil.  */)
       (char *, PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER)
       = GetProcAddress (hKernel, "GetDiskFreeSpaceExA");
     bool have_pfn_GetDiskFreeSpaceEx =
-      (w32_unicode_filenames && pfn_GetDiskFreeSpaceExW
-       || !w32_unicode_filenames && pfn_GetDiskFreeSpaceExA);
+      ((w32_unicode_filenames && pfn_GetDiskFreeSpaceExW)
+       || (!w32_unicode_filenames && pfn_GetDiskFreeSpaceExA));
 
     /* On Windows, we may need to specify the root directory of the
        volume holding FILENAME.  */
diff --git a/src/w32notify.c b/src/w32notify.c
index 7155f16f3b0..86412b8a974 100644
--- a/src/w32notify.c
+++ b/src/w32notify.c
@@ -247,7 +247,6 @@ watch_worker (LPVOID arg)
 
   do {
     BOOL status;
-    DWORD sleep_result;
     DWORD bytes_ret = 0;
 
     if (dirwatch->dir)
@@ -275,7 +274,7 @@ watch_worker (LPVOID arg)
     /* Sleep indefinitely until awoken by the I/O completion, which
        could be either a change notification or a cancellation of the
        watch.  */
-    sleep_result = SleepEx (INFINITE, TRUE);
+    SleepEx (INFINITE, TRUE);
   } while (!dirwatch->terminate);
 
   return 0;
@@ -287,7 +286,6 @@ static struct notification *
 start_watching (const char *file, HANDLE hdir, BOOL subdirs, DWORD flags)
 {
   struct notification *dirwatch = xzalloc (sizeof (struct notification));
-  HANDLE thr;
 
   dirwatch->signature = DIRWATCH_SIGNATURE;
   dirwatch->buf = xmalloc (16384);
diff --git a/src/w32proc.c b/src/w32proc.c
index 96f11657892..426a656f566 100644
--- a/src/w32proc.c
+++ b/src/w32proc.c
@@ -1772,12 +1772,12 @@ sys_spawnve (int mode, char *cmdname, char **argv, char **envp)
       if (need_quotes)
         {
           int escape_char_run = 0;
-          char * first;
-          char * last;
+          /* char * first; */
+          /* char * last; */
 
           p = *targ;
-          first = p;
-          last = p + strlen (p) - 1;
+          /* first = p; */
+          /* last = p + strlen (p) - 1; */
           *parg++ = '"';
 #if 0
           /* This version does not escape quotes if they occur at the
@@ -2249,10 +2249,9 @@ static BOOL CALLBACK
 find_child_console (HWND hwnd, LPARAM arg)
 {
   child_process * cp = (child_process *) arg;
-  DWORD thread_id;
   DWORD process_id;
 
-  thread_id = GetWindowThreadProcessId (hwnd, &process_id);
+  GetWindowThreadProcessId (hwnd, &process_id);
   if (process_id == cp->procinfo.dwProcessId)
     {
       char window_class[32];
diff --git a/src/w32term.c b/src/w32term.c
index 15b502b7c1b..52eccc27e81 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -4752,8 +4752,8 @@ w32_read_socket (struct terminal *terminal,
               width = rect.right - rect.left;
               text_width = FRAME_PIXEL_TO_TEXT_WIDTH (f, width);
               text_height = FRAME_PIXEL_TO_TEXT_HEIGHT (f, height);
-              rows = FRAME_PIXEL_HEIGHT_TO_TEXT_LINES (f, height);
-              columns = FRAME_PIXEL_WIDTH_TO_TEXT_COLS (f, width);
+              /* rows = FRAME_PIXEL_HEIGHT_TO_TEXT_LINES (f, height); */
+              /* columns = FRAME_PIXEL_WIDTH_TO_TEXT_COLS (f, width); */
 
               /* TODO: Clip size to the screen dimensions.  */
 
@@ -5794,7 +5794,9 @@ x_set_mouse_pixel_position (struct frame *f, int pix_x, int pix_y)
 void
 x_focus_frame (struct frame *f)
 {
+#if 0
   struct w32_display_info *dpyinfo = &one_w32_display_info;
+#endif
 
   /* Give input focus to frame.  */
   block_input ();