ChaCha_set_iv
LCRYPTO_ALIAS(ChaCha_set_iv);
void ChaCha_set_iv(ChaCha_ctx *ctx, const unsigned char *iv,
ChaCha_set_iv((ChaCha_ctx *)ctx->cipher_data, iv, counter);
ChaCha_set_iv(&cpx->chacha, iv, NULL);
LCRYPTO_USED(ChaCha_set_iv);
ChaCha_set_iv(&ctx, tv->iv, NULL);
ChaCha_set_iv(&ctx, tv->iv, NULL);
ChaCha_set_iv(&ctx, tv->iv, NULL);