Ticket #229 (closed defect: fixed)

Description

  * test_server.TestProtocolError: test hasReturnTo() when message=None.
  We had a "if False is not None" in ProtocolError.hasReturnTo.
    {
    hunk ./openid/server/server.py 1599
    -            return False
    +            return None
    hunk ./openid/test/test_server.py 134
    +
    +    def test_noMessage(self):
    +        e = server.ProtocolError(None, "no moar pancakes")
    +        self.failIf(e.hasReturnTo())
    +        self.failUnlessEqual(e.whichEncoding(), None)
    }