Workaround clang analyzer warning by creating temp variable.
Workaround clang analyzer warning by creating temp variable.

Change-Id: Idc7cafc9c7aeed9c01443efed0892cccb459ac0f

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