shut up some compiler warnings
shut up some compiler warnings

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