Break out of the config processing loop for manager.conf once the correct user

has been found so that 'cat' is non-NULL.  This way, users.conf is only checked
when necessary.  (issue #8852, akohlsmith, committed patch a bit different)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@51296 65c4cc65-6c06-0410-ace0-fbb531ad65f3