[gtksourceview] UndoManager: use g_object_add_weak_pointer()

[Sébastien Wilmet <swilmet src gnome org>]

commit 7b21bdb8952798c04c3c167357a51512fd42ef69
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Aug 21 23:07:09 2014 +0200

    UndoManager: use g_object_add_weak_pointer()

 gtksourceview/gtksourceundomanagerdefault.c |   17 ++++-------------
 1 files changed, 4 insertions(+), 13 deletions(-)
---
diff --git a/gtksourceview/gtksourceundomanagerdefault.c b/gtksourceview/gtksourceundomanagerdefault.c
index aed9c98..f14e394 100644
--- a/gtksourceview/gtksourceundomanagerdefault.c
+++ b/gtksourceview/gtksourceundomanagerdefault.c
@@ -1050,13 +1050,6 @@ modified_changed_cb (GtkTextBuffer               *buffer,
 }
 
 static void
-buffer_notify (GtkSourceUndoManagerDefault *manager,
-               gpointer                     where_the_object_was)
-{
-       manager->priv->buffer = NULL;
-}
-
-static void
 set_buffer (GtkSourceUndoManagerDefault *manager,
             GtkTextBuffer               *buffer)
 {
@@ -1069,9 +1062,8 @@ set_buffer (GtkSourceUndoManagerDefault *manager,
 
        manager->priv->buffer = buffer;
 
-       g_object_weak_ref (G_OBJECT (buffer),
-                          (GWeakNotify)buffer_notify,
-                          manager);
+       g_object_add_weak_pointer (G_OBJECT (buffer),
+                                  (gpointer *)&manager->priv->buffer);
 
        g_signal_connect_object (buffer,
                                 "insert-text",
@@ -1107,9 +1099,8 @@ gtk_source_undo_manager_default_dispose (GObject *object)
        {
                clear_undo (manager);
 
-               g_object_weak_unref (G_OBJECT (manager->priv->buffer),
-                                    (GWeakNotify)buffer_notify,
-                                    manager);
+               g_object_remove_weak_pointer (G_OBJECT (manager->priv->buffer),
+                                             (gpointer *)&manager->priv->buffer);
 
                manager->priv->buffer = NULL;
        }