extra arg to plugin_admin_post

facebook/facebook.php

@@ -731,9 +731,9 @@ function facebook_plugin_admin(&$a, &$o){
 
 /**
  * @param App $a
- * @param null|object $o
  */
-function facebook_plugin_admin_post(&$a, &$o){
+
+function facebook_plugin_admin_post(&$a){
 	check_form_security_token_redirectOnErr('/admin/plugins/facebook', 'fbsave');
 	
 	if (x($_REQUEST,'fb_save_keys')) {