Merge branch 'stable-3.1' into 'stable-3.1'

fixed sql-query for master-server for mail-backups

See merge request ispconfig/ispconfig3!819

server/lib/classes/cron.d/500-backup_mail.inc.php

@@ -242,7 +242,7 @@ class cronjob_backup_mail extends cronjob {
 						if(!is_file($mail_backup_dir.'/'.$backup['filename'])){
 							$sql = "DELETE FROM mail_backup WHERE server_id = ? AND parent_domain_id = ? AND filename = ?";
 							$app->db->query($sql, $conf['server_id'], $backup['parent_domain_id'], $backup['filename']);
-							if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql);
+							if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql, $conf['server_id'], $backup['parent_domain_id'], $backup['filename']);
 						}
 					}
 				}

server/plugins-available/backup_plugin.inc.php

@@ -296,7 +296,7 @@ class backup_plugin {
 						unlink($mail_backup_file);
 						$sql = "DELETE FROM mail_backup WHERE server_id = ? AND parent_domain_id = ? AND filename = ?";
 						$app->db->query($sql, $conf['server_id'], $mail_backup['parent_domain_id'], $mail_backup['filename']);
-						if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql);
+						if($app->db->dbHost != $app->dbmaster->dbHost) $app->dbmaster->query($sql, $conf['server_id'], $mail_backup['parent_domain_id'], $mail_backup['filename']);
 						$app->log('unlink '.$backup_dir.'/'.$mail_backup['filename'], LOGLEVEL_DEBUG);
 					}
 				}