From ac15c3bbb4a9ba3d5bb9e1d00cdf7abedac4161e Mon Sep 17 00:00:00 2001
From: Gleb Mazovetskiy <glex.spb@gmail.com>
Date: Mon, 4 Jul 2022 16:22:02 +0100
Subject: [PATCH] MpqWriter: No `std::ios::in` for new archives

---
 Source/mpq/mpq_writer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Source/mpq/mpq_writer.cpp b/Source/mpq/mpq_writer.cpp
index 257d9305d..f9e8f7f92 100644
--- a/Source/mpq/mpq_writer.cpp
+++ b/Source/mpq/mpq_writer.cpp
@@ -91,8 +91,9 @@ MpqWriter::MpqWriter(const char *path)
 	LogVerbose("Opening {}", path);
 	std::string error;
 	bool exists = FileExists(path);
-	std::ios::openmode mode = std::ios::in | std::ios::out | std::ios::binary;
+	std::ios::openmode mode = std::ios::out | std::ios::binary;
 	if (exists) {
+		mode |= std::ios::in;
 		if (!GetFileSize(path, &size_)) {
 			error = R"(GetFileSize failed: "{}")";
 			LogError(error, path, std::strerror(errno));