Finish score/wakeMonster tidy (scoreSlot; drop unused return)

game/score.go

@@ -126,21 +126,7 @@ func (g *RogueGame) score(amount, flags int, monst byte) {
 func (g *RogueGame) scoreInsert(topTen []ScoreEnt, amount, flags int, monst byte) int {
 	uid := os.Getuid()
 
-	scp := len(topTen)
-	for i := range topTen {
-		if amount > topTen[i].Score {
-			scp = i
-
-			break
-		} else if !g.AllScore && flags != 2 &&
-			topTen[i].UID == uid && topTen[i].Flags != 2 {
-			// only one score per nowin uid
-			scp = len(topTen)
-
-			break
-		}
-	}
-
+	scp := g.scoreSlot(topTen, amount, flags, uid)
 	if scp >= len(topTen) {
 		return -1
 	}
@@ -179,6 +165,25 @@ func (g *RogueGame) scoreInsert(topTen []ScoreEnt, amount, flags int, monst byte
 	return scp
 }
 
+// scoreSlot finds where the new score lands: len(topTen) when it does
+// not place, or when this uid already holds a losing score (the scan of
+// rip.c score).
+func (g *RogueGame) scoreSlot(topTen []ScoreEnt, amount, flags, uid int) int {
+	for i := range topTen {
+		if amount > topTen[i].Score {
+			return i
+		}
+
+		if !g.AllScore && flags != 2 &&
+			topTen[i].UID == uid && topTen[i].Flags != 2 {
+			// only one score per nowin uid
+			return len(topTen)
+		}
+	}
+
+	return len(topTen)
+}
+
 // scoreLines formats the scoreboard, noting which display line holds
 // the freshly inserted score (the display half of rip.c score).
 func (g *RogueGame) scoreLines(topTen []ScoreEnt, ins int) ([]string, int) {