COMP: Change to prevent the HP compiler issuing a compile warning.
COMP: Change to prevent the HP compiler issuing a compile warning.

The HP compiler did not see the returns in the switch as covering all cases,
if I added a redundant return at the end of the function the MSVC compiler
warned about unreachable code. This should fix both warnings.

johnkit/vtk-dev,sankhesh/VTK,demarle/VTK,demarle/VTK,mspark93/VTK,SimVascular/VTK,ashray/VTK-EVM,sankhesh/VTK,cjh1/VTK,candy7393/VTK,aashish24/VTK-old,jmerkow/VTK,sumedhasingla/VTK,hendradarwin/VTK,sankhesh/VTK,ashray/VTK-EVM,daviddoria/PointGraphsPhase1,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,SimVascular/VTK,mspark93/VTK,johnkit/vtk-dev,keithroe/vtkoptix,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,demarle/VTK,mspark93/VTK,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,msmolens/VTK,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,ashray/VTK-EVM,candy7393/VTK,berendkleinhaneveld/VTK,gram526/VTK,aashish24/VTK-old,gram526/VTK,berendkleinhaneveld/VTK,arnaudgelas/VTK,daviddoria/PointGraphsPhase1,biddisco/VTK,biddisco/VTK,msmolens/VTK,aashish24/VTK-old,gram526/VTK,gram526/VTK,hendradarwin/VTK,jmerkow/VTK,keithroe/vtkoptix,keithroe/vtkoptix,mspark93/VTK,gram526/VTK,collects/VTK,msmolens/VTK,spthaolt/VTK,sumedhasingla/VTK,msmolens/VTK,sankhesh/VTK,collects/VTK,Wuteyan/VTK,SimVascular/VTK,keithroe/vtkoptix,msmolens/VTK,Wuteyan/VTK,sumedhasingla/VTK,candy7393/VTK,cjh1/VTK,johnkit/vtk-dev,Wuteyan/VTK,ashray/VTK-EVM,ashray/VTK-EVM,ashray/VTK-EVM,jmerkow/VTK,demarle/VTK,gram526/VTK,biddisco/VTK,Wuteyan/VTK,mspark93/VTK,mspark93/VTK,biddisco/VTK,candy7393/VTK,keithroe/vtkoptix,SimVascular/VTK,jmerkow/VTK,spthaolt/VTK,naucoin/VTKSlicerWidgets,msmolens/VTK,spthaolt/VTK,msmolens/VTK,hendradarwin/VTK,sankhesh/VTK,demarle/VTK,sumedhasingla/VTK,keithroe/vtkoptix,naucoin/VTKSlicerWidgets,cjh1/VTK,arnaudgelas/VTK,gram526/VTK,candy7393/VTK,aashish24/VTK-old,Wuteyan/VTK,sumedhasingla/VTK,arnaudgelas/VTK,demarle/VTK,biddisco/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,daviddoria/PointGraphsPhase1,mspark93/VTK,spthaolt/VTK,spthaolt/VTK,biddisco/VTK,jmerkow/VTK,sankhesh/VTK,SimVascular/VTK,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,collects/VTK,collects/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,sankhesh/VTK,cjh1/VTK,jeffbaumes/jeffbaumes-vtk,msmolens/VTK,berendkleinhaneveld/VTK,cjh1/VTK,johnkit/vtk-dev,mspark93/VTK,collects/VTK,hendradarwin/VTK,arnaudgelas/VTK,johnkit/vtk-dev,candy7393/VTK,arnaudgelas/VTK,demarle/VTK,spthaolt/VTK,ashray/VTK-EVM,hendradarwin/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,SimVascular/VTK,demarle/VTK,sumedhasingla/VTK,sankhesh/VTK,jeffbaumes/jeffbaumes-vtk,sumedhasingla/VTK,jmerkow/VTK,sumedhasingla/VTK,aashish24/VTK-old,johnkit/vtk-dev,aashish24/VTK-old,naucoin/VTKSlicerWidgets,Wuteyan/VTK,spthaolt/VTK,gram526/VTK,Wuteyan/VTK,hendradarwin/VTK,candy7393/VTK,hendradarwin/VTK,collects/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,candy7393/VTK,biddisco/VTK