[SSSD] [sssd PR#140][opened] gcc7 related fixes

[fidencio]

URL: https://github.com/SSSD/sssd/pull/140
Author: lslebodn
 Title: #140: gcc7 related fixes
Action: opened

PR body:
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"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/140/head:pr140
git checkout pr140