mod_firewall: spam-blocking.pfw: Remove requirement for invites to have no body
Some clients (e.g. Gajim) send a body, which I guess makes sense.
The bare JID sender check should already make it hard to bypass this (i.e.
a normal client putting muc#user into a normal chat message shouldn't bypass
the usual message filters).
2c07bcf56a36d6e74dc0f5422e89bd61f4d31239 0.8-diverge
1656d4fd71d07aa3a52da89d4daf7723a555e7dd last-google-code-commit