[gtk+] Fix gtk_tool_item_get_text_size_group return value

[Matthias Clasen <matthiasc src gnome org>]

commit a9cd99c15f81d6fbb34e84432fc879b21bf86bc6
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 13 20:32:46 2009 -0500

    Fix gtk_tool_item_get_text_size_group return value
    
    Reported by Kazuki Iwamoto in bug 604462.

 gtk/gtktoolitem.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktoolitem.c b/gtk/gtktoolitem.c
index 73b930f..5ad31cc 100644
--- a/gtk/gtktoolitem.c
+++ b/gtk/gtktoolitem.c
@@ -924,7 +924,7 @@ gtk_tool_item_get_text_size_group (GtkToolItem *tool_item)
 {
   GtkWidget *parent;
   
-  g_return_val_if_fail (GTK_IS_TOOL_ITEM (tool_item), GTK_ORIENTATION_HORIZONTAL);
+  g_return_val_if_fail (GTK_IS_TOOL_ITEM (tool_item), NULL);
 
   parent = GTK_WIDGET (tool_item)->parent;
   if (!parent || !GTK_IS_TOOL_SHELL (parent))