Fix compile warnings
Fix compile warnings

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