array check, thanks to phellmes

diff --git a/include/admin/personal.inc.php b/include/admin/personal.inc.php
index ed970a1bea6806cca2521fa22d0cb13e6dc218e2..036de0507b0cf37c55f537452e203e5fbabe6f02 100644 (file)
--- a/include/admin/personal.inc.php
+++ b/include/admin/personal.inc.php
@@ -32,7 +32,9 @@ if ($serendipity['GET']['adminAction'] == 'save' && serendipity_checkFormToken()
                         // Void, no fixing neccessarry
 
                     } elseif (serendipity_checkPermission('adminUsersMaintainSame')) {
-
+                        if (!is_array($_POST[$item['var']])) {
+                            continue;
+                        }
                         // Check that no user may assign groups he's not allowed to.
                         foreach($_POST[$item['var']] AS $groupkey => $groupval) {
                             if (in_array($groupval, $valid_groups)) {