[gtk+] GdkWindow: destroy paint gl context on destroy

[Alexander Larsson <alexl src gnome org>]

commit 5f14630b76f31c9f6c146100cb3a843ffa28db6d
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Oct 30 12:07:39 2014 +0100

    GdkWindow: destroy paint gl context on destroy

 gdk/gdkwindow.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 3bef1da..b43d5d9 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1993,6 +1993,14 @@ _gdk_window_destroy_hierarchy (GdkWindow *window,
                }
            }
 
+          if (window->gl_paint_context)
+            {
+              /* Make sure to destroy if current */
+              g_object_run_dispose (G_OBJECT (window->gl_paint_context));
+              g_object_unref (window->gl_paint_context);
+              window->gl_paint_context = NULL;
+            }
+
           if (window->frame_clock)
             {
               g_object_run_dispose (G_OBJECT (window->frame_clock));