D7601: fuzz: fix test-fuzz-targets.t to run with python3

[pulkit (Pulkit Goyal)]

pulkit added inline comments.

INLINE COMMENTS

> mharbison72 wrote in mpatch_corpus.py:53
> Doesn't `__repr__` have to return `str` on py3?  It looks like there are few other instances of this.

ha, yep. @spectral can you send a follow-up for this?

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7601/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7601

To: spectral, #hg-reviewers, pulkit
Cc: mharbison72, mercurial-devel