message: Fix fd leak in swPipeEventfd_create()
  Reference: Coverity CID
diff: @@ -66,6 +66,7 @@ int swPipeEventfd_create(swPipe *p, int blocking, int semaphore, int timeout)
  if (efd < 0)
  {
  swWarn("eventfd create failed. Error: %s[%d]", strerror(errno), errno);
  + sw_free(object);
  return -1;
  }
  else
  