Fix NPE when parceling getMetadata result.

    private GetDownloadableSubscriptionMetadataResult(Parcel in) {

        this.result = in.readInt();

        this.subscription = DownloadableSubscription.CREATOR.createFromParcel(in);

        this.subscription = in.readTypedObject(DownloadableSubscription.CREATOR);

        this.detailedCode = in.readInt();

    }

    @Override

    public void writeToParcel(Parcel dest, int flags) {

        dest.writeInt(result);

        this.subscription.writeToParcel(dest, 0);

        dest.writeTypedObject(this.subscription, flags);

        dest.writeInt(detailedCode);

    }