dns/yadifa: fix build on GCC architectures
In file included from /usr/include/openssl/bn.h:20,
from /usr/include/openssl/engine.h:18, from /wrkdirs/usr/ports/dns/yadifa/work/yadifa-2.4.1-9916/lib/dnscore/include/dnscore/digest.h:53, from /wrkdirs/usr/ports/dns/yadifa/work/yadifa-2.4.1-9916/lib/dnscore/include/dnscore/dnskey.h:50, from /wrkdirs/usr/ports/dns/yadifa/work/yadifa-2.4.1-9916/lib/dnscore/include/dnscore/tsig.h:48, from /wrkdirs/usr/ports/dns/yadifa/work/yadifa-2.4.1-9916/lib/dnscore/include/dnscore/message.h:64, from src/acl.c:57:
/usr/include/openssl/crypto.h:322: error: expected ')' before 'attribute'
/usr/include/openssl/crypto.h:322: error: expected identifier or '(' before ')' token
MFH: 2021Q1