7c498a0950
On FreeBSD socklen_t is unsigned so the check negative len in inet6_opt_append() is redundant and likely to be optimized away by the compiler. On other operating systems this is not necessarily so, and in the future we may want to sign it so leave the check in but place it in a secondary position as a subtle indication that the bogus check is intentional. Discussed with: rpaulo CID: 1017783
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