Avoid a crash

pointed out in bug 533745

diff --git a/gdk/gdkdnd.c b/gdk/gdkdnd.c
index 542f88f154f9e61692d0fe23c017bdc56b495433..bb2e6a854e80f625023fa5fd178da6ada1d01828 100644 (file)
--- a/gdk/gdkdnd.c
+++ b/gdk/gdkdnd.c
@@ -451,6 +451,7 @@ GdkAtom
 gdk_drag_get_selection (GdkDragContext *context)
 {
   g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE);
+  g_return_val_if_fail (context->source_window != NULL, GDK_NONE);
 
   return GDK_DRAG_CONTEXT_GET_CLASS (context)->get_selection (context);
 }