D3283: py3: suppress the return value of open() in tests/test-subrepo-missing.t

[indygreg (Gregory Szorc)]

indygreg accepted this revision.
indygreg added a comment.
This revision is now accepted and ready to land.


  Nit: (I've seen a few commit messages with this mistake.) The thing whose return is being suppressed is `.write()` not `open()`.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3283

To: pulkit, #hg-reviewers, indygreg
Cc: indygreg, mercurial-devel