fix some more warnings
fix some more warnings

Change-Id: Ibd35dfbd8d21170007e87094b67e551379556e45

sumedhasingla/VTK,sankhesh/VTK,jmerkow/VTK,keithroe/vtkoptix,sumedhasingla/VTK,sumedhasingla/VTK,candy7393/VTK,sumedhasingla/VTK,msmolens/VTK,ashray/VTK-EVM,jmerkow/VTK,ashray/VTK-EVM,jmerkow/VTK,jmerkow/VTK,ashray/VTK-EVM,mspark93/VTK,berendkleinhaneveld/VTK,candy7393/VTK,demarle/VTK,candy7393/VTK,gram526/VTK,gram526/VTK,demarle/VTK,SimVascular/VTK,ashray/VTK-EVM,candy7393/VTK,demarle/VTK,SimVascular/VTK,johnkit/vtk-dev,demarle/VTK,sumedhasingla/VTK,johnkit/vtk-dev,jmerkow/VTK,demarle/VTK,keithroe/vtkoptix,sumedhasingla/VTK,sankhesh/VTK,sankhesh/VTK,sankhesh/VTK,msmolens/VTK,mspark93/VTK,SimVascular/VTK,msmolens/VTK,hendradarwin/VTK,gram526/VTK,gram526/VTK,demarle/VTK,demarle/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,SimVascular/VTK,mspark93/VTK,gram526/VTK,msmolens/VTK,mspark93/VTK,ashray/VTK-EVM,johnkit/vtk-dev,hendradarwin/VTK,berendkleinhaneveld/VTK,mspark93/VTK,johnkit/vtk-dev,johnkit/vtk-dev,berendkleinhaneveld/VTK,mspark93/VTK,msmolens/VTK,johnkit/vtk-dev,keithroe/vtkoptix,sankhesh/VTK,ashray/VTK-EVM,hendradarwin/VTK,mspark93/VTK,candy7393/VTK,johnkit/vtk-dev,jmerkow/VTK,demarle/VTK,ashray/VTK-EVM,keithroe/vtkoptix,msmolens/VTK,msmolens/VTK,hendradarwin/VTK,sankhesh/VTK,sumedhasingla/VTK,candy7393/VTK,berendkleinhaneveld/VTK,hendradarwin/VTK,gram526/VTK,sumedhasingla/VTK,sankhesh/VTK,SimVascular/VTK,hendradarwin/VTK,SimVascular/VTK,keithroe/vtkoptix,keithroe/vtkoptix,msmolens/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,sankhesh/VTK,hendradarwin/VTK,candy7393/VTK,keithroe/vtkoptix,jmerkow/VTK,SimVascular/VTK,mspark93/VTK,keithroe/vtkoptix,gram526/VTK,gram526/VTK,candy7393/VTK