[gimp] app: use accessors instead of using GimpItem members directly

[Michael Natterer <mitch src gnome org>]

commit cfecdc8b705592b98b01211b13c1231126946899
Author: Michael Natterer <mitch gimp org>
Date:   Sun Jan 30 18:58:05 2011 +0100

    app: use accessors instead of using GimpItem members directly

 app/core/gimpitemtree.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/app/core/gimpitemtree.c b/app/core/gimpitemtree.c
index 6000e82..89be882 100644
--- a/app/core/gimpitemtree.c
+++ b/app/core/gimpitemtree.c
@@ -617,7 +617,8 @@ gimp_item_tree_rename_item (GimpItemTree *tree,
   if (strcmp (new_name, gimp_object_get_name (item)))
     {
       if (push_undo)
-        gimp_image_undo_push_item_rename (item->image, undo_desc, item);
+        gimp_image_undo_push_item_rename (gimp_item_get_image (item),
+                                          undo_desc, item);
 
       gimp_item_tree_uniquefy_name (tree, item, new_name);
     }