(bugfix) dns.c: Correct dns_get_record on FreeBSD - Fix #81618 #7655
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Modify dns_get_record to test for records result based on dns_errno to accommodate modern FreeBSD, for which res_nsearch() does not update h_errno directly. Add new php_dns_errno macro, and have it consult statp->res_h_errno when OS has res_nsearch(). Fixes #81618
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Modify dns_get_record to test for records result based on dns_errno to
accommodate modern FreeBSD, for which res_nsearch() does not update
h_errno directly. Add new php_dns_errno macro, and have it consult
statp->res_h_errno when OS has res_nsearch().
Fixes #81618
Test borrowed from #7650.
Will need to be ported up to 7.4, 8.1, and master branches.