6683493 Get error message "cannot unshare 'mypool': unknown -1: unshare(1M) failed" when unset sharesmb

[doug.mccal...@sun.com]

Author: Doug McCallum <Doug.McCallum at Sun.COM>
Repository: /hg/onnv/onnv-gate
Latest revision: 1f86c0aaa0bc69b3f5e223c1c627ce130f526470
Total changesets: 1
Log message:
6683493 Get error message "cannot unshare 'mypool': unknown -1: unshare(1M) 
failed" when unset sharesmb

Files:
        update: usr/src/lib/libshare/common/libshare.c
        update: usr/src/lib/libshare/common/libshare_zfs.c
        update: usr/src/lib/libshare/smb/libshare_smb.c