[mutter/wayland] surface-actor-wayland: Make sure to clean up on dispose

[Jasper St. Pierre <jstpierre src gnome org>]

commit 272676b8967780c8ef922a6c74058e3907e808ca
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Mar 25 11:59:52 2014 -0400

    surface-actor-wayland: Make sure to clean up on dispose
    
    We need to remove our destroy handler if the surface is destroyed
    before the buffer is, which is the case when we have no destroy
    effect.

 src/compositor/meta-surface-actor-wayland.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/src/compositor/meta-surface-actor-wayland.c b/src/compositor/meta-surface-actor-wayland.c
index 00b7666..bf9441b 100644
--- a/src/compositor/meta-surface-actor-wayland.c
+++ b/src/compositor/meta-surface-actor-wayland.c
@@ -137,9 +137,20 @@ meta_surface_actor_wayland_get_window (MetaSurfaceActor *actor)
 }
 
 static void
+meta_surface_actor_wayland_dispose (GObject *object)
+{
+  MetaSurfaceActorWayland *self = META_SURFACE_ACTOR_WAYLAND (object);
+
+  meta_surface_actor_wayland_set_buffer (self, NULL);
+
+  G_OBJECT_CLASS (meta_surface_actor_wayland_parent_class)->dispose (object);
+}
+
+static void
 meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)
 {
   MetaSurfaceActorClass *surface_actor_class = META_SURFACE_ACTOR_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
   surface_actor_class->process_damage = meta_surface_actor_wayland_process_damage;
   surface_actor_class->pre_paint = meta_surface_actor_wayland_pre_paint;
@@ -151,6 +162,8 @@ meta_surface_actor_wayland_class_init (MetaSurfaceActorWaylandClass *klass)
   surface_actor_class->is_unredirected = meta_surface_actor_wayland_is_unredirected;
 
   surface_actor_class->get_window = meta_surface_actor_wayland_get_window;
+
+  object_class->dispose = meta_surface_actor_wayland_dispose;
 }
 
 static void