fix issue #2132
When the starting tet for the walk is a ghost tetrahedron (a tetrahedron with the ghost vertex), we go inside the neighbor tet that is not a ghost tet instead. I forgot to check if that tet was inside our partition.
When the starting tet for the walk is a ghost tetrahedron (a tetrahedron with the ghost vertex), we go inside the neighbor tet that is not a ghost tet instead. I forgot to check if that tet was inside our partition.