TrkGeometry, Clang tidy llvm 10

.../TrkDetDescr/TrkDetDescrAlgs/src/MaterialManipulation.cxx

Tracking/TrkDetDescr/TrkDetDescrAlgs/src/MaterialMapping.cxx

...ng/TrkDetDescr/TrkDetDescrAlgs/src/MaterialValidation.cxx

...ng/TrkDetDescr/TrkDetDescrSvc/src/TrackingGeometrySvc.cxx

...ing/TrkDetDescr/TrkDetDescrSvc/src/TrackingVolumesSvc.cxx

...kDetDescr/TrkDetDescrTestTools/src/GeometryJsonDumper.cxx

...DetDescr/TrkDetDescrTestTools/src/GeometryTTreeDumper.cxx

...tDescr/TrkDetDescrTestTools/src/LayerMaterialAnalyser.cxx

...Descr/TrkDetDescrTestTools/src/LayerMaterialInspector.cxx

...g/TrkDetDescr/TrkDetDescrTestTools/src/MaterialMapper.cxx

...tDescr/TrkDetDescrTestTools/src/RandomSurfacesBuilder.cxx

...r/TrkDetDescrTestTools/src/RecursiveGeometryProcessor.cxx

...escr/TrkDetDescrTestTools/src/TrackingVolumeDisplayer.cxx

...ing/TrkDetDescr/TrkDetDescrTestTools/src/VertexMapper.cxx

...scr/TrkDetDescrTools/src/CompoundLayerMaterialCreator.cxx

...r/TrkDetDescrTools/src/CompressedLayerMaterialCreator.cxx

...rkDetDescr/TrkDetDescrTools/src/CylinderVolumeCreator.cxx

...kDetDescr/TrkDetDescrTools/src/GenericGeometryBuilder.cxx

...Descr/TrkDetDescrTools/src/GenericGeometryBuilderCond.cxx

...king/TrkDetDescr/TrkDetDescrTools/src/GeometryBuilder.cxx