Bad custom game input ends game.

[Lyn Perrine]

To reproduce choose yes to choose a custom game and then choose enter i when chooosing irc level. Will need to sanitize input for the entire part of this. This does not affect each turn of the game but will make you rest. this makes the game exit early and not get played. This will also have to be done for multiplayer. so might as well add sanitization to constructor.