[gtk+/combo-refactor] Fixed GtkCellLayout to pack cells via the api when parsing builder input.

[Tristan Van Berkom <tvb src gnome org>]

commit 080c45d75235a0460633d1dc043b8c949cc44dab
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Wed Nov 24 18:28:31 2010 +0900

    Fixed GtkCellLayout to pack cells via the api when parsing builder input.

 gtk/gtkcelllayout.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkcelllayout.c b/gtk/gtkcelllayout.c
index f25864b..fb35428 100644
--- a/gtk/gtkcelllayout.c
+++ b/gtk/gtkcelllayout.c
@@ -706,12 +706,8 @@ _gtk_cell_layout_buildable_add_child (GtkBuildable      *buildable,
 				      GObject           *child,
 				      const gchar       *type)
 {
-  GtkCellLayoutIface *iface;
-  
   g_return_if_fail (GTK_IS_CELL_LAYOUT (buildable));
   g_return_if_fail (GTK_IS_CELL_RENDERER (child));
 
-  iface = GTK_CELL_LAYOUT_GET_IFACE (buildable);
-  g_return_if_fail (iface->pack_start != NULL);
-  iface->pack_start (GTK_CELL_LAYOUT (buildable), GTK_CELL_RENDERER (child), FALSE);
+  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (buildable), GTK_CELL_RENDERER (child), FALSE);
 }