again assert simple_closed_oriented_path in cut_volume_topo.
again assert simple_closed_oriented_path in cut_volume_topo.

Signed-off-by: Étienne Schmitt <25d5031dc1a1d443222aec9a4e916501ae23c255@inria.fr>

etienneschmitt/CGoGN_2,cgogn/CGoGN_2,untereiner/CGoGN_2,david-cazier/CGoGN_2,untereiner/CGoGN_2,david-cazier/CGoGN_2,cgogn/CGoGN_2