control/media_instance.c: Fix libvlc_media_instance_new_from_input_thread()...

control/media_instance.c: Fix libvlc_media_instance_new_from_input_thread() now that input refcounting is fixed.

src/control/media_instance.c

@@ -103,9 +103,6 @@ static void release_input_thread( libvlc_media_instance_t *p_mi )
     }
     else
     {
-        /* XXX: hack the playlist doesn't retain the input thread,
-         * so we did it for the playlist (see _new_from_input_thread),
-         * revert that here. This will be deleted with the playlist API */
         vlc_object_release( p_input_thread );
     }
 
@@ -410,10 +407,6 @@ libvlc_media_instance_t * libvlc_media_instance_new_from_input_thread(
     /* will be released in media_instance_release() */
     vlc_object_yield( p_input );
 
-    /* XXX: Hack as the playlist doesn't yield the input thread we retain
-     * the input for the playlist. (see corresponding hack in _release) */
-    vlc_object_yield( p_input );
-
     return p_mi;
 }