[mutter/wayland] wayland: Clean up the parallels between creating callbacks and surface extensions

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

commit a09fa3b0e463cab55c43a3888397386224f06948
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri Jan 31 16:40:40 2014 -0500

    wayland: Clean up the parallels between creating callbacks and surface extensions

 src/wayland/meta-wayland-surface.c |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)
---
diff --git a/src/wayland/meta-wayland-surface.c b/src/wayland/meta-wayland-surface.c
index 35d0805..a24c7f3 100644
--- a/src/wayland/meta-wayland-surface.c
+++ b/src/wayland/meta-wayland-surface.c
@@ -172,11 +172,8 @@ meta_wayland_surface_frame (struct wl_client *client,
 
   callback = g_slice_new0 (MetaWaylandFrameCallback);
   callback->compositor = surface->compositor;
-  callback->resource = wl_resource_create (client,
-                                          &wl_callback_interface, 1,
-                                          callback_id);
-  wl_resource_set_user_data (callback->resource, callback);
-  wl_resource_set_destructor (callback->resource, destroy_frame_callback);
+  callback->resource = wl_resource_create (client, &wl_callback_interface, META_WL_CALLBACK_VERSION, 
callback_id);
+  wl_resource_set_implementation (callback->resource, NULL, callback, destroy_frame_callback);
 
   wl_list_insert (surface->pending.frame_callback_list.prev, &callback->link);
 }
@@ -610,7 +607,6 @@ static void
 destroy_surface_extension (MetaWaylandSurfaceExtension *extension)
 {
   wl_list_remove (&extension->surface_destroy_listener.link);
-  extension->surface_destroy_listener.notify = NULL;
   extension->resource = NULL;
 }
 
@@ -640,17 +636,15 @@ create_surface_extension (MetaWaylandSurfaceExtension *extension,
                           const void                  *implementation,
                           wl_resource_destroy_func_t   destructor)
 {
-  struct wl_resource *resource;
-
   if (extension->resource != NULL)
     return FALSE;
 
-  resource = wl_resource_create (client, interface, get_resource_version (master_resource, max_version), id);
-  wl_resource_set_implementation (resource, implementation, extension, destructor);
+  extension->resource = wl_resource_create (client, interface, get_resource_version (master_resource, 
max_version), id);
+  wl_resource_set_implementation (extension->resource, implementation, extension, destructor);
 
-  extension->resource = resource;
   extension->surface_destroy_listener.notify = extension_handle_surface_destroy;
   wl_resource_add_destroy_listener (surface_resource, &extension->surface_destroy_listener);
+
   return TRUE;
 }