[SSSD] [sssd PR#927][synchronized] Add processing to save errno before outputting DEBUG

[miztake]

URL: https://github.com/SSSD/sssd/pull/927
Author: miztake
 Title: #927: Add processing to save errno before outputting DEBUG
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/927/head:pr927
git checkout pr927