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, 4 insertions, 2 deletions

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 ();