[Checkins] [zopefoundation/RestrictedPython] 9979ff: Fix more tests failing on Python 3.9

[Michael Howitz]

  Branch: refs/heads/fix-193
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: 9979ffedb017874905fdadbc0ff742c77e75941f
      https://github.com/zopefoundation/RestrictedPython/commit/9979ffedb017874905fdadbc0ff742c77e75941f
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-03-31 (Tue, 31 Mar 2020)

  Changed paths:
    M src/RestrictedPython/transformer.py

  Log Message:
  -----------
  Fix more tests failing on Python 3.9