From 0fa54531d48eb2fcd09377a6fb8e7c81e09ada63 Mon Sep 17 00:00:00 2001
From: savilli <78875209+savilli@users.noreply.github.com>
Date: Tue, 28 Dec 2021 16:08:21 +0300
Subject: [PATCH] Fix check that denies new clients from a singleplayer session

---
 src/network/serverpackethandler.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/network/serverpackethandler.cpp b/src/network/serverpackethandler.cpp
index c1ddb5005..e5a1bab1e 100644
--- a/src/network/serverpackethandler.cpp
+++ b/src/network/serverpackethandler.cpp
@@ -86,7 +86,7 @@ void Server::handleCommand_Init(NetworkPacket* pkt)
 
 	// Do not allow multiple players in simple singleplayer mode.
 	// This isn't a perfect way to do it, but will suffice for now
-	if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) {
+	if (m_simple_singleplayer_mode && !m_clients.getClientIDs().empty()) {
 		infostream << "Server: Not allowing another client (" << addr_s <<
 			") to connect in simple singleplayer mode" << std::endl;
 		DenyAccess(peer_id, SERVER_ACCESSDENIED_SINGLEPLAYER);