From 4b7d3ddde4ece170faae5643e6388c3aa94e1397 Mon Sep 17 00:00:00 2001
From: Kingsley Chen <kingsamchen@gmail.com>
Date: Tue, 1 Oct 2019 21:55:36 +0800
Subject: [PATCH] Fix the stupid defect

---
 ratelimit.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ratelimit.go b/ratelimit.go
index b286ce5..51a6559 100644
--- a/ratelimit.go
+++ b/ratelimit.go
@@ -310,11 +310,12 @@ func (tb *Bucket) currentTick(now time.Time) int64 {
 // available in the bucket at the given time, which must
 // be in the future (positive) with respect to tb.latestTick.
 func (tb *Bucket) adjustavailableTokens(tick int64) {
+	lastTick := tb.latestTick
 	tb.latestTick = tick
 	if tb.availableTokens >= tb.capacity {
 		return
 	}
-	tb.availableTokens += (tick - tb.latestTick) * tb.quantum
+	tb.availableTokens += (tick - lastTick) * tb.quantum
 	if tb.availableTokens > tb.capacity {
 		tb.availableTokens = tb.capacity
 	}