MFV 286553: 5769 Cast 'zfs bad bloc' to ULL for x86

Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Richard PALO <richard@NetBSD.org>
Approved by: Dan McDonald <danmcd@omniti.com>

illumos/illumos-gate@8c76e0763bcf0029556e106377da859f6492a7ee