if ($retval === UPDATE_FAILED) {
$o .= L10n::t("Executing %s failed with error: %s", $func, $retval);
} elseif ($retval === UPDATE_SUCCESS) {
if ($retval === UPDATE_FAILED) {
$o .= L10n::t("Executing %s failed with error: %s", $func, $retval);
} elseif ($retval === UPDATE_SUCCESS) {