sk_X509_INFO_value
X509_INFO *xi = sk_X509_INFO_value(sk, i);
xi = sk_X509_INFO_value(sk, i);
x = sk_X509_INFO_value(inf, 0);
xi = sk_X509_INFO_value(ret, i);
X509_INFO *xi = sk_X509_INFO_value(allcerts, i);
itmp = sk_X509_INFO_value(inf, i);
it = sk_X509_INFO_value(sk, i);