leaked igmp packets on multicast cleanup

From: Franco Fichtner <franco_at_opnsense.org>
Date: Tue, 20 Aug 2024 14:21:48 UTC
Hi,

This references https://reviews.freebsd.org/D46190 as it is
currently broken on FreeBSD 14.0/14.1 but fixed on main.

I’m sending this because so far I got no reaction from anyone
Involved. It would be nice to get this on stable/14 at least.


Cheers,
Franco