From 28bed56b5a085087a233ea3c491612552a0a1901 Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Mon, 4 May 2020 22:21:56 +0200
Subject: [PATCH] prevent closing more than once

---
 src/matrix/room/timeline/Timeline.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/matrix/room/timeline/Timeline.js b/src/matrix/room/timeline/Timeline.js
index c6321876..95a39022 100644
--- a/src/matrix/room/timeline/Timeline.js
+++ b/src/matrix/room/timeline/Timeline.js
@@ -60,6 +60,9 @@ export class Timeline {
 
     /** @public */
     close() {
-        this._closeCallback();
+        if (this._closeCallback) {
+            this._closeCallback();
+            this._closeCallback = null;
+        }
     }
 }