BUG: Fix XML C API when writing more than just one cell
BUG: Fix XML C API when writing more than just one cell

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