message: fixed swoole_process::close bugs.
diff: @@ -1041,7 +1041,7 @@ static PHP_METHOD(swoole_process, close)
  swoole_php_fatal_error(E_WARNING, "close() failed. Error: %s[%d]", strerror(errno), errno);
  RETURN_FALSE;
  }
  - else
  + if (which == 0)
  {
  process->pipe = 0;
  efree(process->pipe_object);
  