group refcount checking was inconsistent.

- if a group has one or more objects in it, it gets a refcount of 1 on load (unchanged from before)
- dupli-groups, and materials no longer add/remove a reference.
- now groups are only freed when they contain no objects or when manually unlinked.	

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/blenkernel/intern/anim.c b/source/blender/blenkernel/intern/anim.c
index fa0ddc5f1d3..157c0743c50 100644
--- a/source/blender/blenkernel/intern/anim.c
+++ b/source/blender/blenkernel/intern/anim.c
@@ -741,7 +741,7 @@ static void group_duplilist(ListBase *lb, Scene *scene, Object *ob, int level, i
 
 			if(go->ob->transflag & OB_DUPLI) {
 				copy_m4_m4(dob->ob->obmat, dob->mat);
-				object_duplilist_recursive((ID *)group, scene, go->ob, lb, ob->obmat, level+1, animated);
+				object_duplilist_recursive(&group->id, scene, go->ob, lb, ob->obmat, level+1, animated);
 				copy_m4_m4(dob->ob->obmat, dob->omat);
 			}
 		}