From 42cc736bfdda0b7d0464d485eb957f5ea547bdae Mon Sep 17 00:00:00 2001
From: Mattes D <github@xoft.cz>
Date: Wed, 15 Apr 2020 14:13:40 +0200
Subject: [PATCH] ServerHandle: Fix closing failed servers. (#4653)

If the cServerHandle failed to listen, closing it would then crash Cuberite.
---
 src/OSSupport/ServerHandleImpl.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/OSSupport/ServerHandleImpl.cpp b/src/OSSupport/ServerHandleImpl.cpp
index 56509a1a2..371125227 100644
--- a/src/OSSupport/ServerHandleImpl.cpp
+++ b/src/OSSupport/ServerHandleImpl.cpp
@@ -63,7 +63,10 @@ cServerHandleImpl::~cServerHandleImpl()
 void cServerHandleImpl::Close(void)
 {
 	// Stop the listener sockets:
-	evconnlistener_disable(m_ConnListener);
+	if (m_ConnListener != nullptr)
+	{
+		evconnlistener_disable(m_ConnListener);
+	}
 	if (m_SecondaryConnListener != nullptr)
 	{
 		evconnlistener_disable(m_SecondaryConnListener);