func can be None.
func can be None.

	* gtk/gtk.override (_wrap_gtk_link_button_set_uri_hook): func can
	be None.

Distrotech/pygtk,GNOME/pygtk,GNOME/pygtk,amremam2004/pygtk,amremam2004/pygtk,Distrotech/pygtk,amremam2004/pygtk,nzjrs/pygtk,Distrotech/pygtk,nzjrs/pygtk,GNOME/pygtk,nzjrs/pygtk