[gnome-games] Fix for GSEAL of GdkVisual

[Thomas Hindoe Paaboel Andersen <thomashpa src gnome org>]

commit f61954b8a720c2afc03ebe2c7f39935552f0e8a9
Author: Thomas Hindoe Paaboel Andersen <phomes gmail com>
Date:   Tue Jun 15 22:47:36 2010 +0200

    Fix for GSEAL of GdkVisual
    
    GNOME bug #586731

 aisleriot/board-noclutter.c         |    2 +-
 libgames-support/games-gtk-compat.h |    3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/aisleriot/board-noclutter.c b/aisleriot/board-noclutter.c
index 8b27d00..2ea5681 100644
--- a/aisleriot/board-noclutter.c
+++ b/aisleriot/board-noclutter.c
@@ -950,7 +950,7 @@ drag_begin (AisleriotBoard *board)
 
   moving_pixmap = gdk_pixmap_new (priv->moving_cards_window,
                                   width, height,
-                                  gdk_drawable_get_visual (priv->moving_cards_window)->depth);
+                                  gdk_visual_get_depth (gdk_drawable_get_visual (priv->moving_cards_window)));
   moving_mask = gdk_pixmap_new (priv->moving_cards_window,
                                 width, height,
                                 1);
diff --git a/libgames-support/games-gtk-compat.h b/libgames-support/games-gtk-compat.h
index dfb4212..75413bc 100644
--- a/libgames-support/games-gtk-compat.h
+++ b/libgames-support/games-gtk-compat.h
@@ -20,6 +20,9 @@
 #define GAMES_GTK_COMPAT_H
 
 G_BEGIN_DECLS
+#if !GTK_CHECK_VERSION (2, 22, 0)
+#define gdk_visual_get_depth(widget) ((widget)->depth)
+#endif /* GTK < 2.22.0 */
 
 #if !GTK_CHECK_VERSION (2, 20, 0)
 #define gtk_widget_get_realized(widget)                 (GTK_WIDGET_REALIZED(widget))