[caiman-discuss] Trivial code review request 3233 beadm list output shows space used by BE as greater than what is on disk

[William Schumann]

http://cr.opensolaris.org/~wmsch/bug-3233/
http://defect.opensolaris.org/bz/show_bug.cgi?id=3233

Space used for snapshots was being handled in an int, where it should 
have been handled in a 64-bit unsigned variable.