sixtracklib/opencl: bugfixing in NS(ClContext) C API for the selected node index accessor function
sixtracklib/opencl: bugfixing in NS(ClContext) C API for the selected node index accessor function

SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib