FlattenInListTransform causes leaks

[dagss]

I looked at flatin.c and this is a confirmed leak, not a refnanny problem.

$ python runtests.py --refnanny --no-cpp --no-cleanup -vv flatin

Exception raised:
    Traceback (most recent call last):
      File "/usr/lib/python2.5/doctest.py", line 1228, in __run
        compileflags, 1) in test.globs
      File "<doctest flatin[0]>", line 1, in <module>
        test_in('ABC')
      File "flatin.pyx", line 25, in flatin.test_in (flatin.c:496)
      File "refnanny.pyx", line 90, in refnanny.__Pyx_Refnanny_FinishContext (refnanny.c:1941)
      File "refnanny.pyx", line 49, in refnanny.RefnannyContext.end (refnanny.c:1441)
    RefnannyException: References leaked: 
      Acquired on lines: 299

[dagss]

FlattenInListTransform may be the problem here, I've temporarily disabled it

[scoder]

It's not really in the transform, rather in the EvalWithTempExprNode.