Comment 2 for bug 1050620

StacktraceTop:
 g_action_muxer_insert (muxer=0xcc6d50, prefix=0x7fcc0b0fe11d "app", action_group=0x936010) at /build/buildd/gtk+3.0-3.5.16/./gtk/gactionmuxer.c:645
 gtk_window_set_application (window=window@entry=0x938110, application=application@entry=0x936010) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkwindow.c:2845
 gtk_application_window_added (application=0x936010, window=window@entry=0x938110) at /build/buildd/gtk+3.0-3.5.16/./gtk/gtkapplication.c:507
 g_cclosure_marshal_VOID__OBJECTv (closure=0x934020, return_value=<optimized out>, instance=0x936010, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x934050) at /build/buildd/glib2.0-2.33.12/./gobject/gmarshal.c:1312
 _g_closure_invoke_va (closure=0x934020, return_value=0x0, instance=0x936010, args=0x7fffe3d67528, n_params=1, param_types=0x934050) at /build/buildd/glib2.0-2.33.12/./gobject/gclosure.c:840