BUG: Correct Empty input crash for vtkPointSetToLabelHierarch.
BUG: Correct Empty input crash for vtkPointSetToLabelHierarch.

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