diff -urN gtk+-2.24.6-orig/gtk/gtkitemfactory.h gtk+-2.24.6/gtk/gtkitemfactory.h
--- gtk+-2.24.6-orig/gtk/gtkitemfactory.h	2011-08-16 11:30:52 +0900
+++ gtk+-2.24.6/gtk/gtkitemfactory.h	2011-10-01 16:52:59 +0900
@@ -44,7 +44,7 @@
  * (Note that if we are included from a C++ program () will mean
  * (void) so an explicit cast will be needed.)
  */
-typedef	void	(*GtkItemFactoryCallback)  ();
+typedef	void	(*GtkItemFactoryCallback)  (void);
 typedef	void	(*GtkItemFactoryCallback1) (gpointer		 callback_data,
 					    guint		 callback_action,
 					    GtkWidget		*widget);