gdkdisplay: Warn if asked for a non-zero screen not a zero screen

Following on from a6b29d73 this commit correctly warn if you try and use
deprecated multiple screen behaviour.

diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index 20ea9b4fad3d5a58553b3a7509f14b6535d51e94..1cec8bba0d1c8f17e3b080547e7e6ecdba415cfd 100644 (file)
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -1449,7 +1449,7 @@ gdk_display_get_screen (GdkDisplay *display,
                        gint        screen_num)
 {
   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
-  g_return_val_if_fail (screen_num != 0, NULL);
+  g_return_val_if_fail (screen_num == 0, NULL);
 
   return gdk_display_get_default_screen (display);
 }