$OpenBSD: patch-src_gui_instance_h,v 1.1 2015/09/24 10:40:16 ajacoutot Exp $

Fix build with libsigc++ >= 2.6.0.

--- src/gui/instance.h.orig	Thu Jul  9 09:33:04 2015
+++ src/gui/instance.h	Thu Sep 24 11:06:18 2015
@@ -33,7 +33,6 @@
 #include <gtkmm/treeview.h>
 #include <gtkmm/treestore.h>
 #include <synfigapp/instance.h>
-#include <sigc++/object.h>
 #include <synfigapp/value_desc.h>
 #include "trees/historytreestore.h"
 #include <synfig/canvas.h>
