Added a helper that ensures a bbox has some non-NULL dimension along all its axes. Also, fixed some (rather unlikely) NULL dereference cases (though it should not in this context, `BKE_object_boundbox_get()` can return NULL).
Added a helper that ensures a bbox has some non-NULL dimension along all its axes. Also, fixed some (rather unlikely) NULL dereference cases (though it should not in this context, `BKE_object_boundbox_get()` can return NULL).