https://bugs.gentoo.org/886521
https://github.com/MusicPlayerDaemon/MPD/issues/1693
https://github.com/MusicPlayerDaemon/MPD/commit/e4b055eb6d08c5c8f8d85828ce4005d410e462cb

From e4b055eb6d08c5c8f8d85828ce4005d410e462cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
 <congdanhqx@gmail.com>
Date: Thu, 1 Dec 2022 08:29:23 +0700
Subject: [PATCH] v0.23.x: RemoteTagCache: add missing include

Fix build with Boost 1.81.0. `<array>` was included by one of those boost headers,
however, it's no longer included as of Boost 1.81.0.

`master` doesn't use `std::array` in this file.

While we're at it, add all necessary inclusion files.
--- a/src/RemoteTagCache.hxx
+++ b/src/RemoteTagCache.hxx
@@ -28,7 +28,11 @@
 #include <boost/intrusive/list.hpp>
 #include <boost/intrusive/unordered_set.hpp>
 
+#include <array>
+#include <functional>
+#include <memory>
 #include <string>
+#include <utility>
 
 class RemoteTagCacheHandler;