Defensive coding
Defensive coding

Change-Id: Ia6152ece94d227d07172f32873d2200b39bdcfbe

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