Pierre-Yves David <pierre-yves.david@octobus.net> [Wed, 09 Jun 2021 00:59:04 +0200] rev 47427
transaction: narrow the error filtering when failing to rename undo file
Having inconsistent "undo" files can be quite serious so we narrow the error
filtering to the intent that the comment explain.
(This is an opportunity improvement while looking at something next to that.)
Differential Revision: https://phab.mercurial-scm.org/D10845