[issue13938] 2to3 fails to convert types.StringTypes appropriately

[Mark Lawrence]

Mark Lawrence added the comment:

A short patch LGTM.  Can we have a commit review please.

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nosy: +BreamoreBoy
versions: +Python 3.4, Python 3.5 -Python 3.2, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13938>
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