From 6997b973ee989a900cb63d494797c75442be7e40 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matthias=20Mail=C3=A4nder?= <matthias@mailaender.name>
Date: Sun, 5 Dec 2021 14:37:08 +0100
Subject: [PATCH] Fix a null reference exception.

---
 OpenRA.Mods.Common/UtilityCommands/CheckYaml.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/OpenRA.Mods.Common/UtilityCommands/CheckYaml.cs b/OpenRA.Mods.Common/UtilityCommands/CheckYaml.cs
index 099135a0a5..ecf509517f 100644
--- a/OpenRA.Mods.Common/UtilityCommands/CheckYaml.cs
+++ b/OpenRA.Mods.Common/UtilityCommands/CheckYaml.cs
@@ -85,7 +85,11 @@ namespace OpenRA.Mods.Common.UtilityCommands
 
 				foreach (var map in maps)
 				{
-					var testMap = new Map(modData, map.package.OpenPackage(map.map, modData.ModFiles));
+					var package = map.package.OpenPackage(map.map, modData.ModFiles);
+					if (package == null)
+						continue;
+
+					var testMap = new Map(modData, package);
 					TestMap(testMap, modData);
 				}