Ghost cells generator: multiblock input bug fix
vtkGhostCellsGenerator was not iterating over input data set correctly
when instantiating output data sets
if the input was a vtkMultiBlockDataSet with more than one depth of
data sets.
vtkGhostCellsGenerator was not iterating over input data set correctly
when instantiating output data sets
if the input was a vtkMultiBlockDataSet with more than one depth of
data sets.