get_realm updated



git-svn-id: http://rfc5766-turn-server.googlecode.com/svn/trunk@1524 d3c6d0af-6456-5cbd-3218-6188ca4e956b
get_realm cleaned



git-svn-id: http://rfc5766-turn-server.googlecode.com/svn/trunk@1525 d3c6d0af-6456-5cbd-3218-6188ca4e956b