Andy Hood points out that `#ifdef MONITOR_DEFAULTTONEAREST' would

benefit from _also_ being conditional on NO_MULTIMON not being
defined, to prevent the possibility of only half the multimon code
being included.

[originally from svn r3644]

window.c

@@ -4584,7 +4584,7 @@ int is_full_screen()
  * one monitor is present. */
 static int get_fullscreen_rect(RECT * ss)
 {
-#ifdef MONITOR_DEFAULTTONEAREST
+#if defined(MONITOR_DEFAULTTONEAREST) && !defined(NO_MULTIMON)
 	HMONITOR mon;
 	MONITORINFO mi;
 	mon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);