message: Better arginfo for mysql prepare.
diff: @@ -313,7 +313,7 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_rollback, 0, 0, 0)
  ZEND_END_ARG_INFO()
  ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_coro_prepare, 0, 0, 1)
  - ZEND_ARG_INFO(0, query)
  + ZEND_ARG_INFO(0, statement)
  ZEND_ARG_INFO(0, timeout)
  ZEND_END_ARG_INFO()
  