message: Fix fatal error of curl on PHP8
diff: @@ -124,6 +124,9 @@ php_curl *swoole_curl_get_handle(zval *zid, bool exclusive, bool required) {
  return nullptr;
  }
  #endif
  + if (SWOOLE_G(req_status) == PHP_SWOOLE_RSHUTDOWN_END) {
  + exclusive = false;
  + }
  if (exclusive) {
  swoole::curl::Handle *handle = nullptr;
  curl_easy_getinfo(ch->cp, CURLINFO_PRIVATE, &handle);
  