Daemon, Mapper: move-assign the Path objects

src/Daemon.cxx

@@ -226,7 +226,7 @@ daemonize_init(const char *user, const char *group, Path &&_pidfile)
 	}
 
 
-	pidfile = _pidfile;
+	pidfile = std::move(_pidfile);
 }
 
 void

src/Mapper.cxx

@@ -109,7 +109,7 @@ mapper_set_music_dir(Path &&path)
 {
 	assert(!path.IsNull());
 
-	music_dir_fs = path;
+	music_dir_fs = std::move(path);
 	music_dir_fs_length = music_dir_fs.length();
 
 	const auto utf8 = music_dir_fs.ToUTF8();
@@ -124,7 +124,7 @@ mapper_set_playlist_dir(Path &&path)
 {
 	assert(!path.IsNull());
 
-	playlist_dir_fs = path;
+	playlist_dir_fs = std::move(path);
 
 	const auto utf8 = playlist_dir_fs.ToUTF8();
 	check_directory(utf8.c_str(), playlist_dir_fs);