[issue15291] test_ast leaks memory a lot

[Roundup Robot]

Roundup Robot <devnull at psf.upfronthosting.co.za> added the comment:

New changeset 048d8d9aecf1 by Antoine Pitrou in branch 'default':
Issue #15291: Fix a memory leak where AST nodes where not properly deallocated.
http://hg.python.org/cpython/rev/048d8d9aecf1

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nosy: +python-dev

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