D965: templatefilters: be sure we always feed cgi.escape a str

[pulkit (Pulkit Goyal)]

pulkit accepted this revision.
pulkit added a comment.


  Checked docs and made sure `cgi.escape` on Python 3 accepts str only.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D965

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