Return NULL to indicate the next shape isn't found

During compaction we must fix up shapes on objects who were extended but
then became embedded.  `rb_shape_traverse_from_new_root` is supposed to
walk shape trees looking for a matching shape.  When a shape has a
"single child" we weren't returning NULL when the edge names didn't
match.

In the case of a single outgoing edge, this patch returns NULL when the
child edge name doesn't match (similar to the case when a shape has a
hash of outgoing edges)

0 files changed, 0 insertions, 0 deletions