BUG: Temporary fix for BUG #4923 (crash trying to read non-existent      metadata): check for NULL pointer. Eventually the underlying      vtkExodusIIReader should return a non-NULL pointer.
BUG: Temporary fix for BUG #4923 (crash trying to read non-existent
     metadata): check for NULL pointer. Eventually the underlying
     vtkExodusIIReader should return a non-NULL pointer.

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