Fix SQL injection vulnerability in adm_config_report.php

Jakub Galczyk (HauntIT blog http://hauntit.blogspot.com/) reported this
issue, introduced by f8a81a33880752364ea47bdd9a987bff986c81de in
MantisBT 1.2.13.

Root cause is the use of unsanitized inlined query parameters.

Fixes #17055
Merge pull request #44 from mantisbt/master

Fix SQL injection vulnerability in adm_config_report.php