From 3f01cddfc4678cd32dcab0cf776025e5c1ccef9b Mon Sep 17 00:00:00 2001
From: darklore <zodiac.brave.story@gmail.com>
Date: Wed, 5 Feb 2020 18:27:15 +0900
Subject: [PATCH] Fix memory leak when Broker.Open and Broker.Close called
 repeatedly

---
 broker.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/broker.go b/broker.go
index d27ebd22d..9ca41c91e 100644
--- a/broker.go
+++ b/broker.go
@@ -1367,6 +1367,7 @@ func (b *Broker) unregisterMetrics() {
 	for _, name := range b.registeredMetrics {
 		b.conf.MetricRegistry.Unregister(name)
 	}
+	b.registeredMetrics = nil
 }
 
 func (b *Broker) registerMeter(name string) metrics.Meter {