[Checkins] [zopefoundation/BTrees] f7991e: added suggested comment

[GitHub]

  Branch: refs/heads/allow_None
  Home:   https://github.com/zopefoundation/BTrees
  Commit: f7991e618a5cc675ecf29b8a00a61cbfa785e827
      https://github.com/zopefoundation/BTrees/commit/f7991e618a5cc675ecf29b8a00a61cbfa785e827
  Author: Jim Fulton <jim at zope.com>
  Date:   2017-01-11 (Wed, 11 Jan 2017)

  Changed paths:
    M BTrees/check.py

  Log Message:
  -----------
  added suggested comment