[src/matt-nb6-plus]: src Closing old heads

[srcmastr <srcmastr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/465fcb4bcf2a
branches:  matt-nb6-plus
changeset: 931941:465fcb4bcf2a
user:      srcmastr <srcmastr%NetBSD.org@localhost>
date:      Fri May 01 04:03:06 2020 +0000

description:
Closing old heads