From be1b57a8380c6fb47668a1583523722242125026 Mon Sep 17 00:00:00 2001
From: mecab <mecab@misosi.ru>
Date: Wed, 31 Jan 2018 09:40:29 -0600
Subject: [PATCH] Fix SQL in cleaning up old notifications

Subtracting numbers from datetime causes wrong value, or raises error depending on MySQL version/configurations
---
 include/classes/notification.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/classes/notification.class.php b/include/classes/notification.class.php
index 48c64e37..f8d0151d 100644
--- a/include/classes/notification.class.php
+++ b/include/classes/notification.class.php
@@ -190,7 +190,7 @@ class Notification extends Mail {
   public function cleanupNotifications($days=7) {
     $failed = 0;
     $this->deleted = 0;
-    $stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE time < (NOW() - ? * 24 * 60 * 60)");
+    $stmt = $this->mysqli->prepare("DELETE FROM $this->table WHERE time < (NOW() - INTERVAL ? DAY)");
     if (! ($this->checkStmt($stmt) && $stmt->bind_param('i', $days) && $stmt->execute())) {
       $failed++;
     } else {