mail-backup: Make sure backup_interval is a string, not an integer.

Author: Florian Schaal

interface/web/mail/mail_user_edit.php

@@ -323,8 +323,8 @@ function onAfterUpdate() {
 
 		//* Change backup options when user mail backup options have been changed
 		if(isset($this->dataRecord['backup_interval']) && ($this->dataRecord['backup_interval'] != $this->oldDataRecord['backup_interval'] || $this->dataRecord['backup_copies'] != $this->oldDataRecord['backup_copies'])) {
-			$backup_interval = $this->dataRecord['backup_interval'];
-			$backup_copies = $this->dataRecord['backup_copies'];
+			$backup_interval = $app->db->quote($this->dataRecord['backup_interval']);
+			$backup_copies = $app->functions->intval($this->dataRecord['backup_copies']);
 			$app->db->datalogUpdate('mail_user', "backup_interval = '$backup_interval', backup_copies = '$backup_copies'", 'mailuser_id', $rec['mailuser_id']);
 			unset($backup_copies);
 			unset($backup_interval);