D1257: dirstate: remove excess attribute lookups for dirstate.status (issue5714)

[durham (Durham Goode)]

durham added a comment.


  Fixed by using _map.clear() instead of replacing the _map.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1257

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