Fix handling of Room{Join,Leave}Response.

src/modules/room/message.ts

@@ -77,19 +77,19 @@ function handleRoomMessageResponse(dispatch: AppDispatch, response): void {
 
 function handleRoomJoinResponse(dispatch: AppDispatch, response): void {
   dispatch(
-    roomSetMembership({
-      roomName: response.room_name,
-      membership: RoomMembership.Joined,
-    })
+    roomSetMembership([
+      response.room_name,
+      RoomMembership.Joined,
+    ])
   );
 }
 
 function handleRoomLeaveResponse(dispatch: AppDispatch, response): void {
   dispatch(
-    roomSetMembership({
-      roomName: response.room_name,
-      membership: RoomMembership.Left,
-    })
+    roomSetMembership([
+      response.room_name,
+      RoomMembership.Left,
+    ])
   );
 }