51b9601320
Adding filevercmp support to grub-core/commands/blsuki.c from gnulib will cause issues with the type of the offset parameter for grub_util_write_image_at() for emu builds. To fix this issue, we can change the type from off_t to grub_off_t. Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>