[gnome-games] Fix warning on exit with gtk 2.17

[Christian Persch <chpe src gnome org>]

commit d9ccc1fca702b383425610c27793065f3a5dc3e2
Author: Christian Persch <chpe gnome org>
Date:   Wed Aug 26 14:08:46 2009 +0200

    Fix warning on exit with gtk 2.17
    
    Use gdk_window_destroy() instead of g_object_unref() on a GdkWindow.
    Bug #593031.

 blackjack/src/blackjack.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/blackjack/src/blackjack.cpp b/blackjack/src/blackjack.cpp
index 80d21a2..365c52c 100644
--- a/blackjack/src/blackjack.cpp
+++ b/blackjack/src/blackjack.cpp
@@ -230,7 +230,7 @@ bj_quit_app (void)
 
         bj_slot_free_pixmaps ();
         g_object_unref (surface);
-        g_object_unref (press_data->moving_cards);
+        gdk_window_destroy (press_data->moving_cards);
 
         gtk_widget_destroy (toplevel_window);
         gtk_main_quit ();