[py3] Added Python 3 compatibility for xrange.

tests/regressiontests/dispatch/tests/test_saferef.py

@@ -1,7 +1,7 @@
 from django.dispatch.saferef import safeRef
+from django.utils.six.moves import xrange
 from django.utils import unittest
 
-
 class Test1(object):
     def x(self):
         pass
@@ -70,4 +70,4 @@ class SaferefTests(unittest.TestCase):
 
     def _closure(self, ref):
         """Dumb utility mechanism to increment deletion counter"""
-        self.closureCount +=1
+        self.closureCount +=1