From 39e61c4fa3a8ae87406d2f1e2885e177a8af75ec Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Tue, 26 Oct 2021 10:21:27 +0100
Subject: [PATCH] Fix cannot read length of undefined for room upgrades (#7037)

---
 src/utils/RoomUpgrade.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utils/RoomUpgrade.ts b/src/utils/RoomUpgrade.ts
index f2ac4aea4e..ba3fb08c9e 100644
--- a/src/utils/RoomUpgrade.ts
+++ b/src/utils/RoomUpgrade.ts
@@ -50,7 +50,7 @@ export async function upgradeRoom(
         spinnerModal = Modal.createDialog(Spinner, null, "mx_Dialog_spinner");
     }
 
-    let toInvite: string[];
+    let toInvite: string[] = [];
     if (inviteUsers) {
         toInvite = [
             ...room.getMembersWithMembership("join"),
@@ -58,7 +58,7 @@ export async function upgradeRoom(
         ].map(m => m.userId).filter(m => m !== cli.getUserId());
     }
 
-    let parentsToRelink: Room[];
+    let parentsToRelink: Room[] = [];
     if (updateSpaces) {
         parentsToRelink = Array.from(SpaceStore.instance.getKnownParents(room.roomId))
             .map(roomId => cli.getRoom(roomId))