Improve Jeopardy cashout message

Print only a single message instead of one per winner to reduce chat
clutter.
Skip cashout to users who won less than the possible cashout value as
limited by the division value to avoid congratulating someone who only
gets 0.
Abort should a regression cause the logic to process an empty set of
finishers to prevent unexpected behavior.

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

wat/db.go

@@ -65,12 +65,8 @@ func NewWatDb() *WatDb {
 
 func (w *WatDb) User(nick, host string, create bool) Player {
 	var player Player
-	query := "nick = ?"
-	if host != "" {
-		query = query + " or host = ?"
-	}
 	// Try and get a user
-	if err := w.db.First(&player, query, nick, host).Error; err != nil && create {
+	if err := w.db.First(&player, "nick = ? or host = ?", nick, host).Error; err != nil && create {
 		fmt.Printf("Creating user: %s\n", err.Error())
 		// No user, make another
 		player.Nick = nick

wat/game.go

@@ -28,7 +28,7 @@ var unconscious = "wat, your hands fumble and fail you. try resting, weakling."
 
 func NewWatGame(bot *WatBot, db *WatDb) *WatGame {
 	g := WatGame{bot, db, Player{}, nil, nil, nil, nil, map[string]int{}}
-	g.me = g.db.User(bot.Nick, "", true)
+	g.me = g.db.User(bot.Nick, "amia8t89xfp8y.liberta.casa", true)
 	g.commands = map[string](func(*Player, []string) string){
 		//"wat":   g.megaWat,
 		"steroid":  g.Steroid,