BUG: fix blatant memory leak, thanks valgrind.
BUG: fix blatant memory leak, thanks valgrind.

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