fix: updateOwner

if there is another owner don't do anything
if not then make the next user in the room the owner

src/messaging/rooms.js

@@ -334,16 +334,15 @@ module.exports = function (Messaging) {
 
 	async function updateOwner(roomId) {
 		let nextOwner = await db.getSortedSetRange(`chat:room:${roomId}:owners`, 0, 0);
-		if (!nextOwner[0]) {
+		if (!nextOwner.length) {
 			// no owners left grab next user
 			nextOwner = await db.getSortedSetRange(`chat:room:${roomId}:uids`, 0, 0);
-		}
-
 			const newOwner = nextOwner[0] || 0;
 			if (parseInt(newOwner, 10) > 0) {
 				await db.sortedSetAdd(`chat:room:${roomId}:owners`, Date.now(), newOwner);
 			}
 		}
+	}
 
 	Messaging.getAllUidsInRoomFromSet = async function (set) {
 		const cacheKey = `${set}:all`;