Restore LSF_check function calls from set/unused variable removal

These functions are not noops and modify the array that is passed in. Thanks
for the catch Richard.
........

Merged revisions 351818 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351819 65c4cc65-6c06-0410-ace0-fbb531ad65f3