tests/test-hup

Remove useless variable assignments in util.opener.

The original idea might have been to prevent circular references, but
as this assignment would have created another reference, this makes
no difference.

#!/bin/sh

hg init
mkfifo p

hg serve --stdio < p &
P=$!
(echo lock; echo addchangegroup; sleep 5) > p &
Q=$!
sleep 3
kill -HUP $P
wait
echo .hg/* .hg/store/*