Snippets for libisofs 1.5.8.pl02 from Nix aarch64-darwin

Sourced from https://hydra.nixos.org/log/bhqgi0r69p16rjb2mky6n622ildxm822-libisofs-1.5.8.pl02.drv.

• libisofs/rockridge.c:694:12: warning: variable 'count' set but not used [-Wunused-but-set-variable]
    694 |     size_t count = 0;
        |            ^
  

• libisofs/hfsplus.c:654:29: warning: taking address of packed member 'ppc_bootdir' of class or structure 'hfsplus_volheader' may result in an unaligned pointer value [-Waddress-of-packed-member]
    654 |      iso_msb ((uint8_t *) (&sb.ppc_bootdir + i
        |                             ^~~~~~~~~~~~~~