From 3316b274966b9628b3c91d932af198001b9e9039 Mon Sep 17 00:00:00 2001
From: Peter Nelson <peter1138@openttd.org>
Date: Thu, 11 Apr 2024 14:37:29 +0100
Subject: [PATCH] Fix: Signature validation did not close its file. (#12479)

---
 src/signature.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/signature.cpp b/src/signature.cpp
index a329410e35..2b64676e5d 100644
--- a/src/signature.cpp
+++ b/src/signature.cpp
@@ -205,6 +205,7 @@ static bool _ValidateSignatureFile(const std::string &filename)
 
 	std::string text(filesize, '\0');
 	size_t len = fread(text.data(), filesize, 1, f);
+	FioFCloseFile(f);
 	if (len != 1) {
 		Debug(misc, 0, "Failed to validate signature: failed to read file: {}", filename);
 		return false;