view mercurial/revlogutils/__init__.py @ 41404:43f9b8c0574b

notify: be more defensive aboute None values

encoding.strtolocal is the identity function on Python 2
but an actual string manipulation routine on Python 3.

In some cases, we were passing None, which caused Python 3
to barf.

Let's change the code to react properly when the value is
None.

Differential Revision: https://phab.mercurial-scm.org/D5713