BUG:Fixed memory leak if input is NULL.
BUG:Fixed memory leak if input is NULL.

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