Fix testDeferredConnection failures.

The 2nd test failed because of a side effect of 1st test.
1st test failed because it (purposely) causes a failure when committing
transaction, and this is remembered inside the transaction itself, and it
then always refuses commit. Aborting is the normal execution path after an
error in commit, so do it.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43400 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ZMySQLDDA/tests/testDeferredConnection.py

@@ -151,6 +151,7 @@ class TestDeferredConnection(ERP5TypeTestCase):
       else:
         self.fail()
     finally:
+      transaction.abort()
       delattr(connection, '_query')
       self.unmonkeypatchConnection(connection)