git: 10ed8ab4ab9b - stable/12 - opencrypto: Fix assignment of crypto completions to worker threads

[Mark Millard]

The use of atomic_fetchadd_64 broke the 32-bit powerpc and powerpcspe 
stable/12 builds via the likes of:

07:16:19 crypto.o: In function `crypto_newsession':
07:16:19 /usr/src/sys/opencrypto/crypto.c:621: undefined reference to `atomic_fetchadd_64'

from the:

+	res->id = atomic_fetchadd_64(&sessid, 1);

(No ci.freebsd.org results exist for stable/13 or for main yet.)

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)