[gtk+] Fix resize grip drawing in GtkAssistant

[Matthias Clasen <matthiasc src gnome org>]

commit f9265ea3b8e1283f61e2d38db6d46879b8dc5ca2
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 8 01:08:24 2010 -0400

    Fix resize grip drawing in GtkAssistant
    
    Chain up in the draw() implementation of GtkAssistant to let
    GtkWindow draw the resize grip. This avoids black resize grips
    in GtkAssistant windows.

 gtk/gtkassistant.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index ce3d8d0..ba9c06b 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -1444,6 +1444,9 @@ gtk_assistant_draw (GtkWidget *widget,
   GtkAssistantPrivate *priv = assistant->priv;
   GtkContainer *container = GTK_CONTAINER (widget);
 
+  if (GTK_WIDGET_CLASS (gtk_assistant_parent_class)->draw)
+    GTK_WIDGET_CLASS (gtk_assistant_parent_class)->draw (widget, cr);
+
   assistant_paint_colored_box (widget, cr);
 
   gtk_container_propagate_draw (container, priv->header_image, cr);