Avoid reaching into RoomEntry from RoomMap.

client/src/room/map.rs

@@ -155,7 +155,7 @@ impl RoomMap {
     self
       .map
       .insert(name.clone(), RoomEntry::new(name, room))
-      .map(|entry| entry.state)
+      .map(|entry| entry.into_state())
   }
 
   /// Looks up the given room name in the map, returning an immutable