Game soft-locks when the host leaves

[ManuelBlanc]

Description

When the host leaves, it may cause clients to go into a black screen that will not respond to any input and cannot be exited. The only known solution is to restart the game.

How to reproduce

1. Start a game with 3 players.
2. The host leaves.
3. As the game starts migrating to another of the two players, the new host also leaves.
4. The third player may be left soft-locked with a black screen.

Expected behavior

When the host leaves, players should be taken to a their inn if a host migration is not possible.