From 61fa179dd5833e4434fbfe7558fcbb695e5fb148 Mon Sep 17 00:00:00 2001
From: islishude <islishude@gmail.com>
Date: Sat, 1 Feb 2020 10:08:21 +0800
Subject: [PATCH] account: fix timer leak

---
 accounts/usbwallet/wallet.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/accounts/usbwallet/wallet.go b/accounts/usbwallet/wallet.go
index ee539d9653..5388074fa9 100644
--- a/accounts/usbwallet/wallet.go
+++ b/accounts/usbwallet/wallet.go
@@ -185,13 +185,16 @@ func (w *wallet) heartbeat() {
 		errc chan error
 		err  error
 	)
+
+	timer := time.NewTicker(heartbeatCycle)
+	defer timer.Stop()
 	for errc == nil && err == nil {
 		// Wait until termination is requested or the heartbeat cycle arrives
 		select {
 		case errc = <-w.healthQuit:
 			// Termination requested
 			continue
-		case <-time.After(heartbeatCycle):
+		case <-timer.C:
 			// Heartbeat time
 		}
 		// Execute a tiny data exchange to see responsiveness