rooms: remove unnecessary promise nesting

We have the release promise in an object, this is no-longer necessary.

src/core/rooms.ts

@@ -87,7 +87,7 @@ export class DefaultRooms implements Rooms {
   private readonly _chatApi: ChatApi;
   private readonly _clientOptions: NormalizedClientOptions;
   private readonly _rooms: Map<string, RoomMapEntry> = new Map<string, RoomMapEntry>();
-  private readonly _releasing = new Map<string, { promise: Promise<void> }>();
+  private readonly _releasing = new Map<string, Promise<void>>();
   private readonly _logger: Logger;
 
   /**
@@ -154,7 +154,7 @@ export class DefaultRooms implements Rooms {
 
       abortController.signal.addEventListener('abort', abortListener);
 
-      releasing.promise
+      releasing
         .then(() => {
           // We aborted before resolution
           if (abortController.signal.aborted) {
@@ -206,7 +206,7 @@ export class DefaultRooms implements Rooms {
         this._logger.debug('Rooms.release(); waiting for previous release call', {
           roomId,
         });
-        return releasing.promise;
+        return releasing;
       }
 
       // If the room is not releasing, there is nothing else to do
@@ -235,7 +235,7 @@ export class DefaultRooms implements Rooms {
     });
 
     this._logger.debug('Rooms.release(); creating new release promise', { roomId, nonce: existing.nonce });
-    this._releasing.set(roomId, { promise: releasePromise });
+    this._releasing.set(roomId, releasePromise);
 
     return releasePromise;
   }