Merge "[libadapter] Fix nullpointer in acceptchanges" into oc-dev

    for (auto& change : mChanges->getTypeChanges()) {

        auto layerId = change.first;

        auto type = change.second;

        if (mDevice.mLayers.count(layerId) == 0) {

            // This should never happen but somehow does.

            ALOGW("Cannot accept change for unknown layer (%" PRIu64 ")",

                  layerId);

            continue;

        }

        auto layer = mDevice.mLayers[layerId];

        layer->setCompositionType(type);

    }