D135: rebase: use one dirstateguard for when using rebase.singletransaction

[martinvonz (Martin von Zweigbergk)]

martinvonz added inline comments.

INLINE COMMENTS

> rebase.py:483
> +
> +            dsguard = util.nullcontextmanager()
> +            if ui.configbool('rebase', 'singletransaction'):

As in the previous patch, this can be None here and in the cases below

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D135

EMAIL PREFERENCES
  https://phab.mercurial-scm.org/settings/panel/emailpreferences/

To: durham, #hg-reviewers
Cc: martinvonz, mercurial-devel