tls_content_remaining
if (tls_content_remaining(rl->rcontent) != 0)
if (tls_content_remaining(rl->rcontent) == 0 &&
return tls_content_remaining(rl->rcontent);
if (tls_content_remaining(rl->rcontent) == 0) {
if (tls_content_remaining(rl->rcontent) == 0)
size_t tls_content_remaining(struct tls_content *content);