x11: Fix compiler warning

diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index 4dc632f0d6fe3af738b74971792d02541ac9025b..cff720eeed7bd4c6cc915f2ce67f93bc983bfb05 100644 (file)
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -2159,7 +2159,7 @@ get_netwm_cardinal_property (GdkWindow   *window,
 guint32
 gdk_x11_window_get_desktop (GdkWindow *window)
 {
-  g_return_if_fail (GDK_IS_WINDOW (window));
+  g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
 
   return get_netwm_cardinal_property (window, "_NET_WM_DESKTOP");
 }