[Checkins] [zopefoundation/ZODB] 76fe62: Special case for no extension data

[GitHub]

  Branch: refs/heads/storage-byte-appreciation
  Home:   https://github.com/zopefoundation/ZODB
  Commit: 76fe627197e37028aaa2952ce2d5debe810ba2c1
      https://github.com/zopefoundation/ZODB/commit/76fe627197e37028aaa2952ce2d5debe810ba2c1
  Author: Jim Fulton <jim at zope.com>
  Date:   2016-11-14 (Mon, 14 Nov 2016)

  Changed paths:
    M src/ZODB/interfaces.py

  Log Message:
  -----------
  Special case for no extension data