One more tweak for Python 3.
One more tweak for Python 3.

Change-Id: I07c33a8cf23d64d4f640fa76a05c844df84a8d1c
Reviewed-on: https://code-review.googlesource.com/c/re2/+/43015
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2