From dd039fd09ed947ade589ec48b3652e3e339ed9d7 Mon Sep 17 00:00:00 2001
From: Amos Bird <amosbird@gmail.com>
Date: Wed, 26 Sep 2018 17:09:30 +0800
Subject: [PATCH] Update threaded_queue.h

https://en.cppreference.com/w/cpp/language/fold
---
 src/threaded_queue.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/threaded_queue.h b/src/threaded_queue.h
index c14307a3..d72f06d7 100644
--- a/src/threaded_queue.h
+++ b/src/threaded_queue.h
@@ -48,8 +48,7 @@ private:
   }
 
   template <size_t... Is> void unlock_impl(std::index_sequence<Is...>) {
-    (void)std::initializer_list<int>{
-        (std::get<Is>(tuple_)->mutex_.unlock(), 0)...};
+    (std::get<Is>(tuple_)->mutex_.unlock(), ...);
   }
 
   std::tuple<Queue...> tuple_;