song: stat file in song_file_update(), don't use isMusic()

isMusic() used to be a very inefficient function: with every
invocation, it did another stat() on the specified file.  There is
only one caller, do the stat() there manually and use hasMusicSuffix()
instead of isMusic().

1 files changed, 0 insertions, 3 deletions

diff --git a/src/ls.h b/src/ls.h
index fdc61bd81..0eed1fe14 100644
--- a/src/ls.h
+++ b/src/ls.h
@@ -40,9 +40,6 @@ int isDir(const char *utf8name);
 
 struct decoder_plugin *hasMusicSuffix(const char *utf8file, unsigned int next);
 
-struct decoder_plugin *isMusic(const char *utf8file, time_t * mtime,
-			       unsigned int next);
-
 int printRemoteUrlHandlers(struct client *client);
 
 int isFile(const char *utf8file, time_t * mtime);