Partition: OnPlayerTagModified() emits IDLE_PLAYER

Replaces one global idle_add() call.

src/Partition.cxx

@@ -193,6 +193,10 @@ void
 Partition::OnPlayerTagModified() noexcept
 {
 	EmitGlobalEvent(TAG_MODIFIED);
+
+	/* notify all clients that the tag of the current song has
+	   changed */
+	EmitIdle(IDLE_PLAYER);
 }
 
 void

src/player/Thread.cxx

@@ -931,10 +931,6 @@ PlayerControl::LockUpdateSongTag(DetachedSong &song,
 	/* the main thread will update the playlist version when he
 	   receives this event */
 	listener.OnPlayerTagModified();
-
-	/* notify all clients that the tag of the current song has
-	   changed */
-	idle_add(IDLE_PLAYER);
 }
 
 inline void