From 8b8d727f6b0266e7c6d3331c5255c2a03711d0b3 Mon Sep 17 00:00:00 2001
From: ucwong <ucwong@126.com>
Date: Fri, 3 Apr 2020 02:01:42 +0000
Subject: [PATCH] eth/filters/api : Add timer.Stop() for filter when it expired

---
 eth/filters/api.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eth/filters/api.go b/eth/filters/api.go
index 30d7b71c31..d2ee2fa6b2 100644
--- a/eth/filters/api.go
+++ b/eth/filters/api.go
@@ -87,6 +87,7 @@ func (api *PublicFilterAPI) timeoutLoop() {
 			case <-f.deadline.C:
 				f.s.Unsubscribe()
 				delete(api.filters, id)
+				go f.deadline.Stop()
 			default:
 				continue
 			}