[gimp/gimp-2-8] Bug 707255 - Open preferences when quitting causes assertion failure.

[Jehan Pagès <jehanp src gnome org>]

commit 175852a407871afdc50e71c2f1f2923a67d89f78
Author: Jehan <jehan girinstud io>
Date:   Thu Sep 5 22:10:24 2013 +1200

    Bug 707255 - Open preferences when quitting causes assertion failure.
    
    Wrong order of destruction functions were causing critical warnings on
    g_signal_handlers_disconnect_by_func() calls.
    Also g_object_ref/unref() the container because the tree handler might
    hold the last ref to the container, once it's disconnected the container
    could be gone.
    (cherry picked from commit 04a3c65aa1f68c99538d86c97649ec4884822030)

 app/widgets/gimpcontainerview.c |   16 ++++++++++------
 1 files changed, 10 insertions(+), 6 deletions(-)
---
diff --git a/app/widgets/gimpcontainerview.c b/app/widgets/gimpcontainerview.c
index 8b4f9ca..c1d081e 100644
--- a/app/widgets/gimpcontainerview.c
+++ b/app/widgets/gimpcontainerview.c
@@ -1074,15 +1074,11 @@ gimp_container_view_remove_container (GimpContainerView *view,
   GimpContainerViewInterface *view_iface;
   GimpContainerViewPrivate   *private;
 
+  g_object_ref (container);
+
   view_iface = GIMP_CONTAINER_VIEW_GET_INTERFACE (view);
   private    = GIMP_CONTAINER_VIEW_GET_PRIVATE (view);
 
-  if (container == private->container)
-    {
-      gimp_tree_handler_disconnect (private->name_changed_handler);
-      private->name_changed_handler = NULL;
-    }
-
   g_signal_handlers_disconnect_by_func (container,
                                         gimp_container_view_add,
                                         view);
@@ -1093,6 +1089,12 @@ gimp_container_view_remove_container (GimpContainerView *view,
                                         gimp_container_view_reorder,
                                         view);
 
+  if (container == private->container)
+    {
+      gimp_tree_handler_disconnect (private->name_changed_handler);
+      private->name_changed_handler = NULL;
+    }
+
   if (! view_iface->model_is_tree && container == private->container)
     {
       gimp_container_view_clear_items (view);
@@ -1103,6 +1105,8 @@ gimp_container_view_remove_container (GimpContainerView *view,
                               (GFunc) gimp_container_view_remove_foreach,
                               view);
     }
+
+  g_object_unref (container);
 }
 
 static void