Fix for cannot Save Options when Remote Backup enabled

If Remote backup is enabled and configured and you go to Server Options you cannot save because always try to resave config without password.

web/edit/server/index.php

@@ -303,7 +303,7 @@ if (!empty($_POST['save'])) {
     // Change remote backup host
     if (empty($_SESSION['error_msg'])) {
         if ((!empty($_POST['v_backup_host'])) && ($_POST['v_backup_type'] == $v_backup_type) && (!isset($v_backup_new))) {
-            if (($_POST['v_backup_host'] != $v_backup_host) || ($_POST['v_backup_username'] != $v_backup_username) || ($_POST['v_backup_password'] || $v_backup_password) || ($_POST['v_backup_bpath'] == $v_backup_bpath)){
+            if (($_POST['v_backup_host'] != $v_backup_host) || ($_POST['v_backup_username'] != $v_backup_username) || ($_POST['v_backup_password'] != $v_backup_password) || ($_POST['v_backup_bpath'] != $v_backup_bpath)){
                 $v_backup_host = escapeshellarg($_POST['v_backup_host']);
                 $v_backup_type = escapeshellarg($_POST['v_backup_type']);
                 $v_backup_username = escapeshellarg($_POST['v_backup_username']);