[gnome-games/sudoku-tube] Typo

[Zhang Sen <zhangsen src gnome org>]

commit 30e79bc1209523960b69d5d990348052b52ef919
Author: Zhang Sen <zh jesse gmail com>
Date:   Mon Jul 13 16:05:34 2009 +0800

    Typo

 gnome-sudoku/src/lib/gsudoku.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-sudoku/src/lib/gsudoku.py b/gnome-sudoku/src/lib/gsudoku.py
index 2077be2..be8b412 100644
--- a/gnome-sudoku/src/lib/gsudoku.py
+++ b/gnome-sudoku/src/lib/gsudoku.py
@@ -384,8 +384,8 @@ class NotesModel:
             self.set_notes(x, y, bottom_note="X")
 
     def clear_hints(self):
-        for x in range(self.group_size):
-            for y in range(self.group_size):
+        for x in range(self._group_size):
+            for y in range(self._group_size):
                 self.set_notes(x, y, bottom_note="")