Fixing a bug dereferencing NULL during delete.
Fixing a bug dereferencing NULL during delete.

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