Merge "NuPlayerRenderer: Handle AMessage post error in openAudioSink"

    msg->setInt32("flags", flags);

    sp<AMessage> response;

    msg->postAndAwaitResponse(&response);

    status_t postStatus = msg->postAndAwaitResponse(&response);

    int32_t err;

    if (!response->findInt32("err", &err)) {

    if (postStatus != OK || response.get() == nullptr || !response->findInt32("err", &err)) {

        err = INVALID_OPERATION;

    } else if (err == OK && isOffloaded != NULL) {

        int32_t offload;