message: Fixed groups initialization in ParNCMesh.
diff: @@ -40,8 +40,7 @@ ParNCMesh::ParNCMesh(MPI_Comm comm, const NCMesh &ncmesh)
  elements[leaf_elements[i]].rank = InitialPartition(i);
  }
  - AssignLeafIndices();
  - UpdateVertices();
  + Update();
  // note that at this point all processors still have all the leaf elements;
  // we however may now start pruning the refinement tree to get rid of
  