Merge "fix null access on mBluetoothA2dp" into main

    TIME_CHECK();

    if (String8 key = String8(AudioParameter::keyReconfigA2dpSupported); keys.containsKey(key)) {

        keys.remove(key);

        if (mBluetoothA2dp != nullptr) {

            bool supports;

            RETURN_STATUS_IF_ERROR(statusTFromBinderStatus(

                            mBluetoothA2dp->supportsOffloadReconfiguration(&supports)));

            result->addInt(key, supports ? 1 : 0);

        } else {

            ALOGI("%s: no IBluetoothA2dp on %s", __func__, mInstance.c_str());

            result->addInt(key, 0);

        }

    }

    return OK;

}