From 2fa9e99fc19d2804d2409ab5904f4c154e70e6cd Mon Sep 17 00:00:00 2001
From: Corey Lin <514971757@qq.com>
Date: Thu, 7 Mar 2019 18:13:06 +0800
Subject: [PATCH] usbwallet: check error returned by driver close (#18057)

Although current two implementations(ledgerDriver, trezorDriver) of interface driver.Close do not actually return any error. Instead, they only return nil.
But since the declaration of Close function returns error, it is better to check the returned error in case in future some new implementation of Close function returns error and we may forget to modify the function which invokes Close function at that time.
---
 accounts/usbwallet/wallet.go | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/accounts/usbwallet/wallet.go b/accounts/usbwallet/wallet.go
index feab505c9..2ddfa30a6 100644
--- a/accounts/usbwallet/wallet.go
+++ b/accounts/usbwallet/wallet.go
@@ -274,9 +274,7 @@ func (w *wallet) close() error {
 	w.device = nil
 
 	w.accounts, w.paths = nil, nil
-	w.driver.Close()
-
-	return nil
+	return w.driver.Close()
 }
 
 // Accounts implements accounts.Wallet, returning the list of accounts pinned to