Fixed clang analyzer warning about dead store.
Fixed clang analyzer warning about dead store.

The store to 'np' is definitely dead, but suspicious.  Perhaps it should be assigning to a different variable? Perhaps it's leftover copy-paste?

Change-Id: I79ec354985f7f0859b790702821a3c08520cbf5f

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