Logout - Updates for PHP 8.1

logout.php

@@ -36,7 +36,7 @@
 	session_destroy();
 
 //check for login return preference
-	if ($_SESSION["user_uuid"] != '') {
+	if (!empty($_SESSION["user_uuid"])) {
 		if (isset($_SESSION['login']['destination_last']) && ($_SESSION['login']['destination_last']['boolean'] == 'true')) {
 			if ($_SERVER['HTTP_REFERER'] != '') {
 				//convert to relative path