OCSP_basic_verify
i = OCSP_basic_verify(bs, verify_other, store,
i = OCSP_basic_verify(bs, NULL, store, 0);
int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
if (OCSP_basic_verify(br, ctx->ocsp->extra_certs,