Python 2.3 compatibility in test_crypto
diff --git a/test/test_crypto.py b/test/test_crypto.py
index 318f470..31ceb2d 100644
--- a/test/test_crypto.py
+++ b/test/test_crypto.py
@@ -566,7 +566,7 @@
 
 
 
-class FunctionTests(TestCase):
+class FunctionTests(TestCase, _Python23TestCaseHelper):
     """
     Tests for free-functions in the L{OpenSSL.crypto} module.
     """