message: Fix compilation errors on PHP-8.1
diff: @@ -634,7 +634,7 @@ static int _php_curl_multi_setopt(php_curlm *mh, zend_long option, zval *zvalue,
  }
  #if LIBCURL_VERSION_NUM > 0x072D00 /* Available since 7.45.0 */
  case CURLMOPT_PUSHFUNCTION: {
  -#if PHP_VERSION_ID <= 80100
  +#if PHP_VERSION_ID < 80100
  if (mh->handlers->server_push == NULL) {
  mh->handlers->server_push = (php_curlm_server_push *) ecalloc(1, sizeof(php_curlm_server_push));
  } else if (!Z_ISUNDEF(mh->handlers->server_push->func_name)) {
  