From b2bb9b3d2a5ae82315ccdd68c9e0ba0acdb984e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Wed, 24 Aug 2022 18:54:02 +0800
Subject: [PATCH] Fix early close

---
 monitor_shared.go  |  4 +++-
 monitor_windows.go | 13 +++++++++----
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/monitor_shared.go b/monitor_shared.go
index cf451b4..eeef602 100644
--- a/monitor_shared.go
+++ b/monitor_shared.go
@@ -68,7 +68,9 @@ func (m *defaultInterfaceMonitor) delayCheckUpdate() error {
 }
 
 func (m *defaultInterfaceMonitor) Close() error {
-	m.networkMonitor.UnregisterCallback(m.element)
+	if m.element != nil {
+		m.networkMonitor.UnregisterCallback(m.element)
+	}
 	return nil
 }
 
diff --git a/monitor_windows.go b/monitor_windows.go
index 7d81742..7e8a566 100644
--- a/monitor_windows.go
+++ b/monitor_windows.go
@@ -45,10 +45,15 @@ func (m *networkUpdateMonitor) Start() error {
 }
 
 func (m *networkUpdateMonitor) Close() error {
-	return E.Errors(
-		m.routeListener.Unregister(),
-		m.interfaceListener.Unregister(),
-	)
+	if m.routeListener != nil {
+		m.routeListener.Unregister()
+		m.routeListener = nil
+	}
+	if m.interfaceListener != nil {
+		m.interfaceListener.Unregister()
+		m.interfaceListener = nil
+	}
+	return nil
 }
 
 func (m *defaultInterfaceMonitor) checkUpdate() error {