Avoid 500 error in VTKServlet.logRequest if URL is unparseable
Avoid 500 error in VTKServlet.logRequest if URL is unparseable

vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk,vtkio/vtk