[Checkins] [zopefoundation/zc.catalog] 4fcaf8: Fix pypy

[GitHub]

  Branch: refs/heads/jam-python3
  Home:   https://github.com/zopefoundation/zc.catalog
  Commit: 4fcaf844398eb4cc9cbd85b069e34786257526fd
      https://github.com/zopefoundation/zc.catalog/commit/4fcaf844398eb4cc9cbd85b069e34786257526fd
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2017-05-08 (Mon, 08 May 2017)

  Changed paths:
    M src/zc/catalog/extentcatalog.rst
    M src/zc/catalog/index.py

  Log Message:
  -----------
  Fix pypy