CRYPTO_LOCK_DSA
if (CRYPTO_add(&dsa->references, -1, CRYPTO_LOCK_DSA) > 0)
return CRYPTO_add(&dsa->references, 1, CRYPTO_LOCK_DSA) > 1;
CRYPTO_LOCK_DSA, dsa->p, ctx))
CRYPTO_LOCK_DSA, dsa->p, ctx);