Matt Harbison <matt_harbison@yahoo.com> [Mon, 08 Mar 2021 12:28:53 -0500] rev 46570
pycompat: fix a bytes vs str issue in `unnamedtempfile()`
This seems trivially correct, though the only two uses I found both took this
path. So I'm guessing we're missing test coverage.
Differential Revision: https://phab.mercurial-scm.org/D10129