message: fix timer memory leak.
diff: @@ -124,7 +124,6 @@ static long php_swoole_add_timer(int ms, zval *callback, zval *param, int persis
  static int php_swoole_del_timer(swTimer_node *tnode TSRMLS_DC)
  {
  - tnode->id = -1;
  swTimer_callback *cb = tnode->data;
  if (!cb)
  {
  