message: Fix null ptr
diff: @@ -366,7 +366,7 @@ static PHP_FUNCTION(swoole_timer_clear)
  ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
  swTimer_node *tnode = swoole_timer_get(id);
  - if (tnode->type != SW_TIMER_TYPE_PHP)
  + if (!tnode || tnode->type != SW_TIMER_TYPE_PHP)
  {
  RETURN_FALSE;
  }
  