D5638: branchmap: encapsulate cache updating in the map itself

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  In https://phab.mercurial-scm.org/D5638#86131, @pulkit wrote:
  
  > This looks good to me. @martinvonz do you have any concerns?
  
  
  Yes, looks good. Sorry, I thought this had already been queued.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D5638

To: mjpieters, #hg-reviewers
Cc: pulkit, martinvonz, mercurial-devel