[issue27715] call-matcher breaks if a method is mocked with spec=True

[Carl Meyer]

Carl Meyer added the comment:

It seems likely that this regression originated with https://hg.python.org/cpython/rev/b888c9043566/ (can't confirm via bisection as the commits around that time fail to compile for me).

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nosy: +michael.foord, pitrou

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27715>
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