From 7808961fc9cb0ee00d93f4856281bcd552b07db4 Mon Sep 17 00:00:00 2001
From: Onchere Bironga <wycliffb@gmail.com>
Date: Thu, 25 Aug 2022 08:48:58 -0700
Subject: [PATCH] Catch exception by const reference (#271)

Summary:
As title.

Pull Request resolved: https://github.com/facebookincubator/mvfst/pull/271

Reviewed By: kvtsoy

Differential Revision: D38998803

Pulled By: avasylev

fbshipit-source-id: 8ac83492175419760528941313ab0c1cc897c4bc
---
 quic/logging/FileQLogger.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/quic/logging/FileQLogger.cpp b/quic/logging/FileQLogger.cpp
index 7e9c440b5..dc0a89396 100644
--- a/quic/logging/FileQLogger.cpp
+++ b/quic/logging/FileQLogger.cpp
@@ -39,7 +39,7 @@ void FileQLogger::setupStream() {
       folly::to<std::string>(path_, "/", (dcid.value()).hex(), extension);
   try {
     writer_ = std::make_unique<folly::AsyncFileWriter>(outputPath);
-  } catch (std::system_error err) {
+  } catch (const std::system_error& err) {
     LOG(ERROR) << "Error creating qlog file. " << err.what();
     return;
   }