Simplify loginStatus using max() builtin

auth.go

@@ -119,18 +119,12 @@ func loginStatus(ip string) (int, int) {
 		}
 	}
 	a.times = kept
-	remaining := loginMaxAttempts - len(a.times)
-	if remaining < 0 {
-		remaining = 0
-	}
+	remaining := max(loginMaxAttempts - len(a.times), 0)
 	retryAfter := 0
 	if remaining == 0 && len(a.times) > 0 {
 		// Time until the oldest attempt falls out of the window.
 		next := a.times[0].Add(loginWindow).Sub(time.Now())
-		retryAfter = int(next.Seconds()) + 1
-		if retryAfter < 1 {
-			retryAfter = 1
-		}
+		retryAfter = max(int(next.Seconds()) + 1, 1)
 	}
 	return remaining, retryAfter
 }