* nua_session.c: do not restart CANCEL requests
  Ignore-this: 2c9d51bbafca2256630a0ea73982abea
  
  Fixes FreesWitch bug SFSIP-134, reported by vile, initial patch by Mike
  Jerris.



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13061 d0543943-73ff-0310-b7d9-9358b9ac24b2