fix: Fix speakerstats reports.

resources/prosody-plugins/mod_speakerstats_component.lua

@@ -166,10 +166,7 @@ function occupant_joined(event)
                 end
             end
 
-            if next(users_json) == nil then
-                return;
-            end
-
+            if next(users_json) ~= nil then
                 local body_json = {};
                 body_json.type = 'speakerstats';
                 body_json.users = users_json;
@@ -182,6 +179,7 @@ function occupant_joined(event)
 
                 room:route_stanza(stanza);
             end
+        end
 
         local context_user = event.origin and event.origin.jitsi_meet_context_user or nil;
         room.speakerStats[occupant.jid] = new_SpeakerStats(nick, context_user);