Mac OS X gui: Fix a rare bug of non-update of the vout's title. The manage-ing...

Mac OS X gui: Fix a rare bug of non-update of the vout's title. The manage-ing thread can't be trust on input change.

modules/gui/macosx/intf.m

@@ -197,6 +197,7 @@ static int PlaylistChanged( vlc_object_t *p_this, const char *psz_variable,
     p_intf->p_sys->b_playlist_update = VLC_TRUE;
     p_intf->p_sys->b_intf_update = VLC_TRUE;
     p_intf->p_sys->b_playmode_update = VLC_TRUE;
+    p_intf->p_sys->b_current_title_update = VLC_TRUE;
     return VLC_SUCCESS;
 }