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'.

1 files changed, 5 insertions, 6 deletions

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];