Relax datetime.timestamp() test around DST change
diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py
index 266ef69..a4180ae 100644
--- a/Lib/test/datetimetester.py
+++ b/Lib/test/datetimetester.py
@@ -1747,7 +1747,7 @@
# Missing hour may produce platform-dependent result
t = self.theclass(2012, 3, 11, 2, 30)
self.assertIn(self.theclass.fromtimestamp(t.timestamp()),
- [t, t + timedelta(hours=1)])
+ [t - timedelta(hours=1), t + timedelta(hours=1)])
# Ambiguous hour defaults to DST
t = self.theclass(2012, 11, 4, 1, 30)
self.assertEqual(self.theclass.fromtimestamp(t.timestamp()), t)