[2.7] bpo-30281: Fix the default value for stop in PySlice_Unpack()#1531

zhangyangyu merged 2 commits intopython:2.7python/cpython:2.7from

zhangyangyu:backport-2.7-bpo-30281zhangyangyu/cpython:backport-2.7-bpo-30281Copy head branch name to clipboard