From a961732f5f52c7bbba11335f84b3f0ceae9e9404 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20K=C3=B6sters?= <timo@koesters.xyz>
Date: Sun, 11 Apr 2021 21:35:17 +0200
Subject: [PATCH] fix: overflow

---
 src/database/rooms/edus.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/database/rooms/edus.rs b/src/database/rooms/edus.rs
index 9e43fe17..c48f4c23 100644
--- a/src/database/rooms/edus.rs
+++ b/src/database/rooms/edus.rs
@@ -382,7 +382,7 @@ impl RoomEdus {
                         .ok()?,
                 ))
             })
-            .take_while(|(_, timestamp)| current_timestamp - timestamp > 5 * 60_000)
+            .take_while(|(_, timestamp)| current_timestamp.saturating_sub(*timestamp) > 5 * 60_000)
         // 5 Minutes
         {
             // Send new presence events to set the user offline