fix(visitors): Let people join lobby when main room is empty but with lobby.

Author: damencho

resources/prosody-plugins/mod_visitors_component.lua

@@ -565,6 +565,10 @@ process_host_module(muc_domain_prefix..'.'..muc_domain_base, function(host_modul
         elseif room._data.participants then
                 -- This is non jaas room which has a list of participants allowed to participate in the main room
                 -- but this occupant is not one of them and the room is either not live or has no participants joined
+                if room:get_members_only() then
+                    -- if there is a lobby, let's pass it through it will wait for the main participant
+                    return;
+                end
                 session.log('warn',
                     'Deny user join in the main not live meeting, not in the list of main participants');
                 session.send(st.error_reply(