BUG: Fix leak of old value when SetAsObjectBase is given a null value to remove an entry.
BUG: Fix leak of old value when SetAsObjectBase is given a null value to remove an entry.

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