Merge branch 'rs/object-id'

Conversion from uchar[20] to struct object_id continues. * rs/object-id: tree-walk: convert fill_tree_descriptor() to object_id

Junio C Hamano committed Aug 24, 2017 at 10:20 UTC 11bd95604ab6ebc8c2edf7db4dccb33c7659890b

No changes.