[issue16584] unhandled IOError filecmp.cmpfiles() if file not readable

[Terry J. Reedy]

Terry J. Reedy added the comment:

I don't use filecmp and cannot reproduce problem on Windows, for reason stated, but this looks correct, so I am taking Till's word that this fixes the problem, at least for him.

Intentionally applied to 2.7 only for reason stated by Andrew.

Till, if you submit more patches, especially any that are not so trivial, please sign PSF Contributor Licence Agreement.
http://www.python.org/psf/contrib/

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resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

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<http://bugs.python.org/issue16584>
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