ENH: need that part to be more robust, some control path leads here when some ivars are already NULL
ENH: need that part to be more robust, some control path leads here when some ivars are already NULL

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