Backport fix of https://bugs.python.org/issue32849

This is needed for starting sysutils/azure-agent at boot:
https://github.com/Azure/WALinuxAgent/issues/1687

Obtained from: https://github.com/python/cpython/pull/12852/commits/f9c01a16dae8aa15d264a1937fb589e8598d1c88
MFH: 2019Q4
Sponsored by: The FreeBSD Foundation