[clean_session] revert itervalues usage from 0bb18407c053 self.close(session) changes the self._sessions content. We need to create a full list of value before starting closing them.

#! /bin/sh -e
 
case "$1" in
    remove)
	if [ -x "/etc/init.d/cubicweb-ctl" ]; then
	    invoke-rc.d cubicweb-ctl stop || true
	fi
    ;;
esac
 
#DEBHELPER#
 
exit 0