Defer loading Spotify playlists until bulk scan is complete

(because of database locking issues)

src/filescanner.c

@@ -1093,6 +1093,10 @@ filescanner(void *arg)
   else
     bulk_scan(F_SCAN_BULK);
 
+#ifdef HAVE_SPOTIFY_H
+  spotify_login(NULL);
+#endif
+
   if (!scan_exit)
     {
       /* Enable inotify */