X509_NAME_entry_count
for (i = 0; i < X509_NAME_entry_count(name); i++) {
if (X509_NAME_entry_count(subj) == 0) {
if (!X509_NAME_entry_count(subj)) {
cnt = X509_NAME_entry_count(n);
if (X509_NAME_entry_count(subject_name) > 0) {
if (X509_NAME_entry_count(nm) > 0) {
int X509_NAME_entry_count(const X509_NAME *name);