Use more direct access to next/previous vertices. - `BM_edge_other_vert(l_curr->e, l_curr->v)` -> `l_curr->next->v`. - `BM_edge_other_vert(l_curr->prev->e, l_curr->v)` -> `l_curr->prev->v`. Add asserts to keep the intention clear.
Use more direct access to next/previous vertices. - `BM_edge_other_vert(l_curr->e, l_curr->v)` -> `l_curr->next->v`. - `BM_edge_other_vert(l_curr->prev->e, l_curr->v)` -> `l_curr->prev->v`. Add asserts to keep the intention clear.