[Bug]: Duplicate client

[rknetwork]

Version of OpenTTD

1.11.2, FreeBSD

Expected result

Duplicate clients appear in GUI, but not in console.

Actual result

Single client

Steps to reproduce

Here is a log file for onion client:

‎*** onion has joined the game (Client #950)
Client #950 is dropped because the client did not respond for more than 501 ticks                                                                                  dbg: [net] 'onion' made an error and has been disconnected. Reason: 'general timeout'                                                                              
‎*** onion has left the game (general timeout)‎*** onion has joined the game (Client #982)
‎*** onion has joined the game (Client #984)
dbg: [net] 'onion' made an error and has been disconnected. Reason: 'general timeout'
‎*** onion has left the game (general timeout)
‎*** onion has joined the game (Client #1026)
‎*** onion has left the game (general timeout)
‎*** onion has joined the game (Client #1034)

[LordAro]

Thanks for the report, this has already been found and fixed independently in #9238