Cleanup Snapclient includes

server/server_settings.hpp

@@ -1,6 +1,6 @@
 /***
     This file is part of snapcast
-    Copyright (C) 2014-2021  Johannes Pohl
+    Copyright (C) 2014-2024  Johannes Pohl
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -16,14 +16,16 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#ifndef SERVER_SETTINGS_HPP
-#define SERVER_SETTINGS_HPP
+#pragma once
 
+
+// local headers
+#include "image_cache.hpp"
+
+// standard headers
 #include <string>
 #include <vector>
 
-#include "image_cache.hpp"
-
 
 struct ServerSettings
 {
@@ -83,5 +85,3 @@ struct ServerSettings
     StreamingClient streamingclient;
     Logging logging;
 };
-
-#endif