[pygobject] Override TreeSortable.set_sort_func and set_default_sort_func to add default values to be pygtk comp

[Sebastian Polsterl <sebp src gnome org>]

commit 914d3a0a29680f4d3aa0e1f8afdd625b017b013a
Author: Sebastian Pölsterl <sebp k-d-w org>
Date:   Mon Jan 17 16:57:53 2011 +0100

    Override TreeSortable.set_sort_func and set_default_sort_func to add default values to be pygtk compliant

 gi/overrides/Gtk.py |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gi/overrides/Gtk.py b/gi/overrides/Gtk.py
index f46b75c..761c25a 100644
--- a/gi/overrides/Gtk.py
+++ b/gi/overrides/Gtk.py
@@ -767,6 +767,12 @@ class TreeSortable(Gtk.TreeSortable, ):
         else:
             return (None, None,)
 
+    def set_sort_func(self, sort_column_id, sort_func, user_data=None):
+        super(TreeSortable, self).set_sort_func(sort_column_id, sort_func, user_data)
+
+    def set_default_sort_func(self, sort_func, user_data=None):
+        super(TreeSortable, self).set_default_sort_func(sort_func, user_data)
+
 TreeSortable = override(TreeSortable)
 __all__.append('TreeSortable')