sha256_final
ATTRIBUTE_WARN_UNUSED_RET int sha256_final(sha256_context *ctx, u8 output[SHA256_DIGEST_SIZE]);
return sha256_final((sha256_context*)hctx, output);
ret = sha256_final(&ctx, output);
ret = sha256_final(&ctx, output);
LEGACY_EVP_MD_METH_TABLE(sha256_init, sha256_update, sha256_final, NULL,