FreeSWITCH-mod-radius-cdr_improvement

 don't print misleading info here either if nat_type isn't set even if the add is a no_op

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13705 d0543943-73ff-0310-b7d9-9358b9ac24b2