* nua_client.c: removed extra NULL check from nua_client_request_complete()
  Ignore-this: cc1f1fb7bf8e4ae07f965846418410a
  
  Coverity issue 7310.


git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13329 d0543943-73ff-0310-b7d9-9358b9ac24b2