[devtools/qunit] Turn FirefoxHelper into a context manager
So that stop() method always gets called.
Also ensure temporary directory created on __init__ gets deleted as well upon
exit.
#! /bin/sh -e
case "$1" in
configure|abort-upgrade|abort-remove|abort-deconfigure)
update-rc.d cubicweb defaults 99 >/dev/null
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
#DEBHELPER#
exit 0