Summary: Fixes T2965, see that task for discussion. This is dumb but seems like our best bet.
Test Plan:
- Installed newish version of Git.
- Set HOME on the websever to `/var/root` (or any other unreadable directory).
- Hit the error described in T2965 when viewing Diffusion.
- Applied this patch.
- Diffusion works.
Reviewers: btrahan, joel
Reviewed By: btrahan
CC: aran, chad
Maniphest Tasks: T2965
Differential Revision: https://secure.phabricator.com/D5994
