From 13f9c34d161693c1c0828fea3750d01c068174b6 Mon Sep 17 00:00:00 2001
From: yyqbuct <yyqbuct@gmail.com>
Date: Tue, 18 Sep 2018 23:00:10 +0800
Subject: [PATCH] Fix deadlock, ensure instances mutex unlocked (#2296)

it's a stupid mistake
---
 caddy.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/caddy.go b/caddy.go
index a29f05d79..d2f60001d 100644
--- a/caddy.go
+++ b/caddy.go
@@ -858,6 +858,7 @@ func Stop() error {
 	for {
 		instancesMu.Lock()
 		if len(instances) == 0 {
+			instancesMu.Unlock()
 			break
 		}
 		inst := instances[0]