From f983fce9ffa7c614869e63de827c65ff119940d4 Mon Sep 17 00:00:00 2001
From: YoshiRulz <OSSYoshiRulz@gmail.com>
Date: Mon, 30 May 2022 07:27:53 +1000
Subject: [PATCH] Add note re: `IHawkArchiveFile.Scan` returning null

see 0f2194475
---
 src/BizHawk.Client.Common/SharpCompressArchiveFile.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/BizHawk.Client.Common/SharpCompressArchiveFile.cs b/src/BizHawk.Client.Common/SharpCompressArchiveFile.cs
index 9c8f55e95f..13f0c4112b 100644
--- a/src/BizHawk.Client.Common/SharpCompressArchiveFile.cs
+++ b/src/BizHawk.Client.Common/SharpCompressArchiveFile.cs
@@ -49,7 +49,7 @@ namespace BizHawk.Client.Common
 			for (var i = 0; i < entries.Count; i++)
 			{
 				var (entry, archiveIndex) = entries[i];
-				if (entry.Key == null) return null;
+				if (entry.Key is null) return null; // see https://github.com/adamhathcock/sharpcompress/issues/137
 				outFiles.Add(new HawkArchiveFileItem(entry.Key.Replace('\\', '/'), size: entry.Size, index: i, archiveIndex: archiveIndex));
 			}
 			return outFiles;