BUG: fix seg fault
BUG: fix seg fault

biddisco/VTK,jmerkow/VTK,candy7393/VTK,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,hendradarwin/VTK,sankhesh/VTK,msmolens/VTK,ashray/VTK-EVM,demarle/VTK,spthaolt/VTK,arnaudgelas/VTK,candy7393/VTK,keithroe/vtkoptix,sumedhasingla/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,cjh1/VTK,SimVascular/VTK,mspark93/VTK,jeffbaumes/jeffbaumes-vtk,arnaudgelas/VTK,cjh1/VTK,hendradarwin/VTK,hendradarwin/VTK,gram526/VTK,aashish24/VTK-old,biddisco/VTK,aashish24/VTK-old,collects/VTK,cjh1/VTK,jmerkow/VTK,Wuteyan/VTK,msmolens/VTK,msmolens/VTK,candy7393/VTK,hendradarwin/VTK,ashray/VTK-EVM,candy7393/VTK,daviddoria/PointGraphsPhase1,jmerkow/VTK,hendradarwin/VTK,sumedhasingla/VTK,johnkit/vtk-dev,sumedhasingla/VTK,arnaudgelas/VTK,hendradarwin/VTK,naucoin/VTKSlicerWidgets,msmolens/VTK,collects/VTK,gram526/VTK,aashish24/VTK-old,collects/VTK,keithroe/vtkoptix,candy7393/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,Wuteyan/VTK,demarle/VTK,spthaolt/VTK,mspark93/VTK,mspark93/VTK,collects/VTK,ashray/VTK-EVM,arnaudgelas/VTK,gram526/VTK,biddisco/VTK,aashish24/VTK-old,spthaolt/VTK,SimVascular/VTK,demarle/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,sankhesh/VTK,candy7393/VTK,ashray/VTK-EVM,ashray/VTK-EVM,sankhesh/VTK,candy7393/VTK,biddisco/VTK,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,demarle/VTK,mspark93/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,keithroe/vtkoptix,msmolens/VTK,mspark93/VTK,spthaolt/VTK,naucoin/VTKSlicerWidgets,naucoin/VTKSlicerWidgets,Wuteyan/VTK,jmerkow/VTK,keithroe/vtkoptix,keithroe/vtkoptix,ashray/VTK-EVM,spthaolt/VTK,sankhesh/VTK,sankhesh/VTK,SimVascular/VTK,arnaudgelas/VTK,candy7393/VTK,sumedhasingla/VTK,keithroe/vtkoptix,aashish24/VTK-old,johnkit/vtk-dev,jeffbaumes/jeffbaumes-vtk,jeffbaumes/jeffbaumes-vtk,johnkit/vtk-dev,biddisco/VTK,mspark93/VTK,sankhesh/VTK,biddisco/VTK,spthaolt/VTK,mspark93/VTK,demarle/VTK,ashray/VTK-EVM,sankhesh/VTK,berendkleinhaneveld/VTK,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,biddisco/VTK,naucoin/VTKSlicerWidgets,johnkit/vtk-dev,naucoin/VTKSlicerWidgets,demarle/VTK,collects/VTK,spthaolt/VTK,jmerkow/VTK,Wuteyan/VTK,johnkit/vtk-dev,jmerkow/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,demarle/VTK,SimVascular/VTK,sumedhasingla/VTK,collects/VTK,mspark93/VTK,hendradarwin/VTK,SimVascular/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,gram526/VTK,gram526/VTK,msmolens/VTK,cjh1/VTK,msmolens/VTK,berendkleinhaneveld/VTK,Wuteyan/VTK,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,arnaudgelas/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,cjh1/VTK,gram526/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,gram526/VTK,demarle/VTK,sumedhasingla/VTK,johnkit/vtk-dev,Wuteyan/VTK,aashish24/VTK-old,Wuteyan/VTK,jeffbaumes/jeffbaumes-vtk,keithroe/vtkoptix,SimVascular/VTK,gram526/VTK,msmolens/VTK