From 4a8438ebb4431e41350e21bce454e6ac513ecec1 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sun, 9 Jun 2019 12:57:57 +0300
Subject: [PATCH] - fixed crash on loading map in Hexen format without any
 nodes

---
 src/maploader/maploader.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/maploader/maploader.cpp b/src/maploader/maploader.cpp
index a3d543c95c..65fd69da40 100644
--- a/src/maploader/maploader.cpp
+++ b/src/maploader/maploader.cpp
@@ -767,6 +767,11 @@ bool MapLoader::LoadExtendedNodes (FileReader &dalump, uint32_t id)
 
 static bool P_CheckV4Nodes(MapData *map)
 {
+	if (map->Size(ML_NODES) == 0)
+	{
+		return false;
+	}
+
 	char header[8];
 
 	map->Read(ML_NODES, header, 8);