MFC r314148, r314150r314148:Misc Coverity fixes in xnb(4)Most of these are null pointer dereferences or missing error checks in theunit tests. One is a missing error check in xnb_attach_failed. None cancause real problems in running systems.Reported by: CoverityCIDs: 1092469 1092468 1092467 2092466 1092465 1092512 1092511 1092510CIDs: 1092510 1092509 1092508 1092507Reviewed by: roygerSponsored by: Spectra Logic CorpDifferential Revision: https://reviews.freebsd.org/D9234r314150:Fix the xnb(4) unit testsOne test was inadvertently expecting a bug in the kernel's sscanfimplementation circa 2012. I don't know when that bug got fixed.Reported by: roygerReviewed by: roygerSponsored by: Spectra Logic CorpDifferential Revision: https://reviews.freebsd.org/D9766
Merge r256868,257276-257277,257515,257913 from head. These are fixesrequired to make Xen buтldable w/o INET.Sponsored by: Nginx, Inc.