x11: Don't crash when NULL eometry hints are set

Fixes crashers in gnome-panel.

diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index 52f3642ddca8100b567e915e779ab6a4cc4dc3d9..7a99d3098ba113e424ddcd4b775000646831cda2 100644 (file)
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -2478,7 +2478,8 @@ gdk_x11_window_set_geometry_hints (GdkWindow         *window,
   toplevel = _gdk_x11_window_get_toplevel (window);
   if (toplevel)
     {
-      toplevel->last_geometry_hints = *geometry;
+      if (geometry)
+        toplevel->last_geometry_hints = *geometry;
       toplevel->last_geometry_hints_mask = geom_mask;
     }