Fixed thread-safety issue.
Fixed thread-safety issue.

Which also seemed like an unnecessary optimization.

Change-Id: Ifa0f905912f352166fe3c47e1bb68a6a66ec4797

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