Bastien Montagne
39439a3afe
Issue was exposed by recent own rB03bf84db86b commit, but was actually present in RNA API for PointCaches since (probably) ages: whole accessor code here was assuming that owner ID was an Object, when it is actually a scene for RigidBody simulations... Had also to make `BKE_ptcache_id_find()` and friends a bit more flexible, now they also accept a NULL object pointer parameter...