Martin von Zweigbergk <martinvonz@google.com> [Thu, 14 Nov 2019 21:58:36 -0800] rev 43729
tags: don't check for clean files when checking for dirty working copy
We didn't request status for clean files so there should never be any
entries in the list of clean files (at least not since dd773340a085),
but it's misleading to check the list.
Differential Revision: https://phab.mercurial-scm.org/D7428