[gtk+/native-layout] Call the ->get_desired_size() method directly on the vtable

[Tristan Van Berkom <tvb src gnome org>]

commit ef321923299d3d113a38effe2afbded58939deaf
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Tue Apr 6 02:53:51 2010 -0400

    Call the ->get_desired_size() method directly on the vtable
    
    This commit is a mistake, it should have been included with the last
    commit.

 gtk/gtksizegroup.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtksizegroup.c b/gtk/gtksizegroup.c
index ca28d89..ea6a8e0 100644
--- a/gtk/gtksizegroup.c
+++ b/gtk/gtksizegroup.c
@@ -678,10 +678,12 @@ do_size_request (GtkWidget *widget)
        */
       extended_minimum.width  = 0;
       extended_minimum.height = 0;
-      gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (widget),
-                                            &extended_minimum,
-                                            &aux_info->natural_size);
 
+      GTK_EXTENDED_LAYOUT_GET_IFACE
+	(widget)->get_desired_size (GTK_EXTENDED_LAYOUT (widget),
+				    &extended_minimum,
+				    &aux_info->natural_size);
+      
       /* Base the base widget requisition on both the size-requst and the extended layout size
        */
       widget->requisition.width  = MAX (widget->requisition.width,  extended_minimum.width);