Merge tag 'Smack-for-7.0' of https://github.com/cschaufler/smack-next

Merge tag 'Smack-for-7.0' of https://github.com/cschaufler/smack-next

Pull smack updates from Casey Schaufler:
 "Two improvements to the code for setting the CIPSO Domain Of
  Interpretation (DOI), a seldom used feature, and a formatting change"

* tag 'Smack-for-7.0' of https://github.com/cschaufler/smack-next:
  smack: /smack/doi: accept previously used values
  smack: /smack/doi must be > 0
  security: smack: fix indentation in smack_access.c