D2688: hgweb: adapt to socket._fileobject changes in Python 3

[yuja (Yuya Nishihara)]

yuja requested changes to this revision.
yuja added a comment.
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  As long as `self.request` is a socket object, we can use `request.makefile()` on Python 2.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2688

To: durin42, #hg-reviewers, yuja
Cc: yuja, mercurial-devel