[SSSD] [sssd PR#51][opened] TOOL: Fixing of sign-compare warning

[fidencio]

   URL: https://github.com/SSSD/sssd/pull/51
Author: celestian
 Title: #51: TOOL: Fixing of sign-compare warning
Action: opened

PR body:
"""
Warning was on src/tools/tools_util.c:116.
(We have fixed this issue at master.)
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/51/head:pr51
git checkout pr51