Fix std warnings.
Fix std warnings.

Change-Id: I4275821d50dba3cc0d6ec50ed0e1cc682c23ccc9

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