Update session.lib.php

-prepare -> query (for example betteln.php could not read $pageconfig)

lib/session.lib.php

@@ -18,7 +18,7 @@ if (!isset($_GET['ref'])) $_GET['ref'] = "0";
 if ($_SESSION['werber'] == "0") $_SESSION['werber'] = (int)$_GET['ref'];
 
 // Seiteneinstellungen laden...
-$pageconfig = sql::$db->prepare ("SELECT * FROM `" . _VMS_ . "_seitenkonfig` LIMIT 1")->fetch();
+$pageconfig = sql::$db->query ("SELECT * FROM `" . _VMS_ . "_seitenkonfig` LIMIT 1")->fetch();
 
 if ($pageconfig['wartung'] == 1 && $_SESSION['uid'] != $system['admin_id'] && strpos($_SERVER['PHP_SELF'], "/adminforce/") == false) {
     setCookie('uid', '', time() - 86400 * 30);