I really don't like that at the end of a friendly knock around the player with the lowest score is said to be the winner.
It's just a stroll around a course, a few beers and good chat. Winning and losing doesn't come into it.
It would also be nice if the chat window stayed open until you click close or end game. Having to say Thanks for the game, well played. Got time for another round? before the last putt is annoying.
To the OP, don't sweat it. As Paul said, they won nothing, there won't even be a record of them playing the round, or part of it. Quitters are like hemorrhoids, a real pain in the ****.