multistream: Janus crashed when a participant join a videoroom

[vuta1927]

Recently our janus server sometime had been crashed when an user try join videoroom. This is trace from core dump file when janus crash: https://pastebin.com/v8bgcpmb

Looked at your codes janus_videoroom.c, I think you guys are missing check null condition in line 8825 for 'ps' variable.

[lminiero]

There's no line 8825 in the multistream VideoRoom. Please try the latest changes, not older commits.

[vuta1927]

Strangely, I can find this line in janus_videoroom.c in mutilstream branch, it has been commited 8 days ago.

janus-gateway/plugins/janus_videoroom.c

Line 8825 in f2be6df

} else if(ps->svc) {

[lminiero]

My bad... I was looking at the master version 🤦‍♂️
You're right, we probably need that additional check over there, I'll add it shortly.