Fix minor problems found by --enable-gcc-warnings.

* frame.c (Fhandle_focus_in, Fhandle_focus_out): Return a value.
* keyboard.c (kbd_buffer_get_event): Remove unused local.

src/ChangeLog

+2013-07-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix minor problems found by --enable-gcc-warnings.
+	* frame.c (Fhandle_focus_in, Fhandle_focus_out): Return a value.
+	* keyboard.c (kbd_buffer_get_event): Remove unused local.
+
 2013-07-16  Jan Djärv  <jan.h.d@swipnet.se>
 
 	* xterm.c (x_focus_changed): Always generate FOCUS_IN_EVENT.

src/frame.c

@@ -895,7 +895,7 @@ is not generated.
 This function checks if blink-cursor timers should be turned on again.  */)
   (Lisp_Object event)
 {
-  call0 (intern ("blink-cursor-check"));
+  return call0 (intern ("blink-cursor-check"));
 }
 
 DEFUN ("handle-focus-out", Fhandle_focus_out, Shandle_focus_out, 1, 1, "e",
@@ -905,7 +905,7 @@ Focus out events occur when no frame has focus.
 This function checks if blink-cursor timers should be turned off.  */)
   (Lisp_Object event)
 {
-  call0 (intern ("blink-cursor-suspend"));
+  return call0 (intern ("blink-cursor-suspend"));
 }
 
 DEFUN ("handle-switch-frame", Fhandle_switch_frame, Shandle_switch_frame, 1, 1, "e",

src/keyboard.c

@@ -4092,7 +4092,7 @@ kbd_buffer_get_event (KBOARD **kbp,
 #else
           struct x_display_info *di;
 #endif
-          Lisp_Object rest, frame = event->frame_or_window;
+          Lisp_Object frame = event->frame_or_window;
           bool focused = false;
 
           for (di = x_display_list; di && ! focused; di = di->next)