[pygobject] Override Gtk.TreeSelection.get_selected to not return success value.

[Sebastian Polsterl <sebp src gnome org>]

commit 28f9366c9cb382801bad080864f667c867daa3c7
Author: Sebastian Pölsterl <sebp k-d-w org>
Date:   Sat Oct 9 17:40:40 2010 +0200

    Override Gtk.TreeSelection.get_selected to not return success value.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=631765

 gi/overrides/Gtk.py |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/gi/overrides/Gtk.py b/gi/overrides/Gtk.py
index 026940d..20c01a6 100644
--- a/gi/overrides/Gtk.py
+++ b/gi/overrides/Gtk.py
@@ -427,6 +427,18 @@ class TreeViewColumn(Gtk.TreeViewColumn):
 TreeViewColumn = override(TreeViewColumn)
 __all__.append('TreeViewColumn')
 
+class TreeSelection(Gtk.TreeSelection):
+
+    def get_selected(self):
+        success, model, aiter = super(TreeSelection, self).get_selected()
+        if success:
+            return (model, aiter)
+        else:
+            return (model, None)
+
+TreeSelection = override(TreeSelection)
+__all__.append('TreeSelection')
+
 class Button(Gtk.Button):
     def __init__(self, label=None, stock=None, use_underline=False):
         if stock: