minor fix to MHD test
minor fix to MHD test

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