message: debug assert if we attempt to push_lock for an unsupported mutex type
diff: @@ -472,6 +472,10 @@ void push_lock(void *c, const CLockLocation &locklocation, LockType locktype, Ow
  // this lock can not deadlock itself
  // intentionally left blank
  }
  + else
  + {
  + DbgAssert(!"unsupported lock type", return);
  + }
  // Begin general deadlock checks for all lock types
  AddNewLock(now, tid);
  