unique_resource
General RAII wrapper for exclusive ownership resource management.
Used in the Mapbox GL plugin of Qt Location.
The sources can be found in qtlocation-opensource-src-kLFSLk/qtlocation-opensource-src-5.12.5+dfsg/src/3rdparty/mapbox-gl-native/deps/unique_resource.
Copyright (c) 2015 okdshin