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

Fix build with libsigc++ >= 2.6.0.

--- src/gui/workarea.cpp.orig	Sat Jul 18 07:34:53 2015
+++ src/gui/workarea.cpp	Thu Sep 24 11:08:06 2015
@@ -45,8 +45,6 @@
 #include <gtkmm/scrollbar.h>
 #include <cmath>
 #include <sigc++/retype_return.h>
-#include <sigc++/retype.h>
-#include <sigc++/hide.h>
 #include <ETL/misc>
 
 #include <synfig/target_scanline.h>
