[3.8] bpo-38823: Clean up refleaks in _contextvars initialization. (GH-17198)#17200

miss-islington merged 1 commit intopython:3.8python/cpython:3.8from

miss-islington:backport-143a97f-3.8miss-islington/cpython:backport-143a97f-3.8Copy head branch name to clipboard