fix test_pyclbr which failed because the new StringIO presented bases it couldn't find
diff --git a/Lib/test/test_pyclbr.py b/Lib/test/test_pyclbr.py
index e8eb94e..77b691d 100644
--- a/Lib/test/test_pyclbr.py
+++ b/Lib/test/test_pyclbr.py
@@ -140,7 +140,7 @@
 
     def test_easy(self):
         self.checkModule('pyclbr')
-        self.checkModule('doctest', ignore=("TestResults",))
+        self.checkModule('doctest', ignore=("TestResults", "_SpoofOut"))
         self.checkModule('rfc822')
         self.checkModule('difflib', ignore=("Match",))