Merge "Release buffers on MediaCodec#stop()" into rvc-dev am: 987087c3

        // TODO: convert err into status_t

        mCallback->onError(UNKNOWN_ERROR, ACTION_CODE_FATAL);

    }

    // Assure buffers are not owned when stop() was called without flush().

    std::list<std::unique_ptr<C2Work>> flushedWork;

    mChannel->flush(flushedWork);

    {

        Mutexed<std::unique_ptr<Config>>::Locked configLocked(mConfig);