[issue4801] _collections module fail to build on cygwin

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Committed a different correction in r68145: 
according to documention, _PyObject_GC_TRACK should not be used in 
extension modules.

Thanks for the report.

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nosy: +amaury.forgeotdarc
resolution:  -> fixed
status: open -> closed

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