From 34f182a12334cd25be9f250ff4da295a5a64142f Mon Sep 17 00:00:00 2001
From: Dale McCoy <21223975+DaleStan@users.noreply.github.com>
Date: Mon, 23 Jan 2023 22:28:37 -0500
Subject: [PATCH] Fix at one bug revealed by #199.

pcall(require, '__nonexistent-mod__/file') doesn't fail in a way that Lua can handle.
---
 YAFCparser/FactorioDataSource.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/YAFCparser/FactorioDataSource.cs b/YAFCparser/FactorioDataSource.cs
index 87c97072..2442292d 100644
--- a/YAFCparser/FactorioDataSource.cs
+++ b/YAFCparser/FactorioDataSource.cs
@@ -63,7 +63,8 @@ public static bool ModPathExists(string modName, string path)
 
         public static byte[] ReadModFile(string modName, string path)
         {
-            var info = allMods[modName];
+            if (!allMods.TryGetValue(modName, out var info))
+                return null;
             if (info.zipArchive != null)
             {
                 var entry = info.zipArchive.GetEntry(info.folder + path);