fix some warnings
fix some warnings

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