From 9237967fff641061cb70b0b36dc6b05022bd15ce Mon Sep 17 00:00:00 2001
From: XiShiLong <1050201327@qq.com>
Date: Thu, 2 Jun 2022 18:00:10 +0800
Subject: [PATCH] To avoid turning off the listener and restarting the
 listening service, you need to re-create the object

Turning on the listening service again after closing the listening service with the same object will panic because the close method does not re-add the wait list
---
 watcher.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/watcher.go b/watcher.go
index 4da4dfe..e218959 100644
--- a/watcher.go
+++ b/watcher.go
@@ -709,6 +709,7 @@ func (w *Watcher) Close() {
 	w.running = false
 	w.files = make(map[string]os.FileInfo)
 	w.names = make(map[string]bool)
+	w.wg.Add(1)
 	w.mu.Unlock()
 	// Send a close signal to the Start method.
 	w.close <- struct{}{}