[issue15277] Fix resource leak in support.py:_is_ipv6_enabled

[Roundup Robot]

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

New changeset c9299edf1f67 by Ross Lagerwall in branch 'default':
#15277: Fix a resource leak in support.py when IPv6 is disabled.
http://hg.python.org/cpython/rev/c9299edf1f67

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nosy: +python-dev

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