sha2_digest_final_uio
ret = sha2_digest_final_uio(octx, mac, digest_len, digest);
ret = sha2_digest_final_uio(
ret = sha2_digest_final_uio(&sha2_hmac_ctx.hc_ocontext, mac,
ret = sha2_digest_final_uio(&PROV_SHA2_CTX(ctx)->sc_sha2_ctx,
ret = sha2_digest_final_uio(&PROV_SHA2_CTX(ctx)->sc_sha2_ctx,
ret = sha2_digest_final_uio(&sha2_ctx, digest,