From acbf18d0dd793452395a9b4de26dfd413d91bf59 Mon Sep 17 00:00:00 2001
From: sunlong169 <71108420+sunlong169@users.noreply.github.com>
Date: Sat, 16 Oct 2021 23:52:01 +0800
Subject: [PATCH] No need to define the Mutex mutex_ as mutable there is no
 const method.

There's no need to define the Mutex mutex_ as mutable since class base_sink has no const method.
---
 include/spdlog/sinks/base_sink.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/spdlog/sinks/base_sink.h b/include/spdlog/sinks/base_sink.h
index a0624e94..21c5545f 100644
--- a/include/spdlog/sinks/base_sink.h
+++ b/include/spdlog/sinks/base_sink.h
@@ -37,7 +37,7 @@ public:
 protected:
     // sink formatter
     std::unique_ptr<spdlog::formatter> formatter_;
-    mutable Mutex mutex_;
+    Mutex mutex_;
 
     virtual void sink_it_(const details::log_msg &msg) = 0;
     virtual void flush_() = 0;