[nautilus] Use nautilus_directory_unref to unref directories

[Alexander Larsson <alexl src gnome org>]

commit 8c3e5abb396bb67274d9e3d769295ece33b52091
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Dec 8 16:26:57 2009 +0100

    Use nautilus_directory_unref to unref directories
    
    Its nice to have nautilus_directory_ref/unref paired for help when
    debugging.

 src/file-manager/fm-tree-model.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/file-manager/fm-tree-model.c b/src/file-manager/fm-tree-model.c
index bebecc9..c058bc1 100644
--- a/src/file-manager/fm-tree-model.c
+++ b/src/file-manager/fm-tree-model.c
@@ -214,7 +214,7 @@ tree_node_destroy (FMTreeModel *model, TreeNode *node)
 	g_assert (node->done_loading_id == 0);
 	g_assert (node->files_added_id == 0);
 	g_assert (node->files_changed_id == 0);
-	object_unref_if_not_NULL (node->directory);
+	nautilus_directory_unref (node->directory);
 
 	g_free (node);
 }