[HELP NEEDED] VirtualBox 6.1.24 update

Hi,

I've tested updating to latest virtualbox. It mostly works. But the 
audio subsystem has been overhauled. Our patches don't apply anymore, 
but they may not be necessary. Looks like the new code does the right 
thing for OSS and ALSA.

Unluckily I'm unable to start any VM using pulseaudio. I've submitted 
the patch and comments (including some error messages I get) here:

https://reviews.freebsd.org/D31264

If anyone has a clue, please followup there (or here if not "enrolled" 
in phabricator)

Thanks in advance!

-- 
Guido Falsi <mad@madpilot.net>