From 1153ce43c6c2af45031a4a3dbaedc37d6a408241 Mon Sep 17 00:00:00 2001
From: Matthew Hodgson <matthew@matrix.org>
Date: Wed, 3 Apr 2019 20:38:25 +0100
Subject: [PATCH] fix NPE for rooms with redacted tombstones

---
 src/matrix-to.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/matrix-to.js b/src/matrix-to.js
index 15979000c4..99a02dc42d 100644
--- a/src/matrix-to.js
+++ b/src/matrix-to.js
@@ -241,7 +241,7 @@ export function makeRoomPermalink(roomId) {
 
     // If the roomId isn't actually a room ID, don't try to list the servers.
     // Aliases are already routable, and don't need extra information.
-    if (roomId[0] !== '!') return permalinkBase;
+    if (!roomId || roomId[0] !== '!') return permalinkBase;
 
     const client = MatrixClientPeg.get();
     const room = client.getRoom(roomId);