[3.6] Make two PyModuleDef_Slot symbols static in _testmultiphase. (GH-8147)#8149

miss-islington merged 1 commit intopython:3.6python/cpython:3.6from

miss-islington:backport-cb4bae7-3.6miss-islington/cpython:backport-cb4bae7-3.6Copy head branch name to clipboard