X509V3_R_EXTENSION_EXISTS
{ERR_REASON(X509V3_R_EXTENSION_EXISTS) , "extension exists"},
errcode = X509V3_R_EXTENSION_EXISTS;
if (ERR_GET_REASON(error) != X509V3_R_EXTENSION_EXISTS) {
ERR_GET_REASON(error), X509V3_R_EXTENSION_EXISTS);
ERR_GET_REASON(error), X509V3_R_EXTENSION_EXISTS);