From 073fdc7b0e610d974a4981e6f9d97ff23edf8225 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sa=C3=BAl=20Ibarra=20Corretg=C3=A9?= <saghul@jitsi.org>
Date: Fri, 6 Mar 2020 12:33:41 +0100
Subject: [PATCH] sperakerstats: prevent access of nil object (#5112)

If the dominant speaker leaves their object will be gone from the mapping.
---
 resources/prosody-plugins/mod_speakerstats_component.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/resources/prosody-plugins/mod_speakerstats_component.lua b/resources/prosody-plugins/mod_speakerstats_component.lua
index f32500802..7f30f6cc4 100644
--- a/resources/prosody-plugins/mod_speakerstats_component.lua
+++ b/resources/prosody-plugins/mod_speakerstats_component.lua
@@ -53,7 +53,10 @@ function on_message(event)
         local oldDominantSpeakerId = roomSpeakerStats['dominantSpeakerId'];
 
         if oldDominantSpeakerId then
-            roomSpeakerStats[oldDominantSpeakerId]:setDominantSpeaker(false);
+            local oldDominantSpeaker = roomSpeakerStats[oldDominantSpeakerId];
+            if oldDominantSpeaker then
+                oldDominantSpeaker:setDominantSpeaker(false);
+            end
         end
 
         if newDominantSpeaker then