db/plugins/simple/Song: pass StorageFileInfo to UpdateFile()

Eliminates a redundant GetInfo() call.

src/db/plugins/simple/Song.hxx

@@ -14,6 +14,7 @@
 #include <string>
 
 struct Directory;
+struct StorageFileInfo;
 class ExportedSong;
 class DetachedSong;
 class Storage;
@@ -119,6 +120,7 @@ struct Song : IntrusiveListHook<> {
 	 * recognized
 	 */
 	static SongPtr LoadFile(Storage &storage, std::string_view name_utf8,
+				const StorageFileInfo &info,
 				Directory &parent);
 
 	/**
@@ -126,7 +128,7 @@ struct Song : IntrusiveListHook<> {
 	 *
 	 * @return true on success, false if the file was not recognized
 	 */
-	bool UpdateFile(Storage &storage);
+	bool UpdateFile(Storage &storage, const StorageFileInfo &info);
 
 #ifdef ENABLE_ARCHIVE
 	static SongPtr LoadFromArchive(ArchiveFile &archive,

src/db/update/UpdateSong.cxx

@@ -41,7 +41,8 @@ try {
 		FmtDebug(update_domain, "reading {}/{}",
 			 directory.GetPath(), name);
 
-		auto new_song = Song::LoadFile(storage, name, directory);
+		auto new_song = Song::LoadFile(storage, name, info,
+					       directory);
 		if (!new_song) {
 			FmtDebug(update_domain,
 				 "ignoring unrecognized file {}/{}",
@@ -63,7 +64,7 @@ try {
 	} else if (info.mtime != song->mtime || walk_discard) {
 		FmtNotice(update_domain, "updating {}/{}",
 			  directory.GetPath(), name);
-		if (song->UpdateFile(storage))
+		if (song->UpdateFile(storage, info))
 			song->mark = true;
 		else
 			FmtDebug(update_domain,