* @param App $a
* @param null|object $b
*/
-function privacy_image_cache_cron(&$a, &$b) {
+function privacy_image_cache_cron(&$a = null, &$b = null) {
$cachetime = get_config('privacy_image_cache','cache_time');
if (!$cachetime) $cachetime = PRIVACY_IMAGE_CACHE_DEFAULT_TIME;
* @param App $a
* @param null|object $o
*/
-function privacy_image_cache_plugin_admin_post(&$a, &$o){
+function privacy_image_cache_plugin_admin_post(&$a = null, &$o = null){
check_form_security_token_redirectOnErr('/admin/plugins/privacy_image_cache', 'picsave');
if (isset($_REQUEST['save'])) {