Snippets for libmatchbox 1.14 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/zikw0ih4j6j8qrvry0jidmsrfbpqahmz-libmatchbox-1.14.drv.

• mbmenu.c:1414:76: warning: for loop has empty body [-Wempty-body]
   1414 |    for(item = menu->items; item->next_item != NULL; item = item->next_item);
        |                                                                            ^
  

• xsettings-client.c:185:34: warning: passing 'char *' to parameter of type 'CARD8 *' (aka 'unsigned char *') converts between pointers to integer types where one is of the unique plain 'char' type and the other is not [-Wpointer-sign]
    185 |   result = fetch_card8 (&buffer, (char *)&buffer.byte_order);
        |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~