Minor comment updates to CertVerify related code.

net/cert/cert_verify_result.cc

Index: net/cert/cert_verify_result.cc
diff --git a/net/cert/cert_verify_result.cc b/net/cert/cert_verify_result.cc
index b1054e4ced34e81ce1c1906d8dbcb9ebade27c44..4b605165d60f7c2d6d0407ecba581db1d5b30f96 100644
--- a/net/cert/cert_verify_result.cc
+++ b/net/cert/cert_verify_result.cc
@@ -36,7 +36,8 @@ void CertVerifyResult::Reset() {
 }
 
 bool CertVerifyResult::operator==(const CertVerifyResult& other) const {
-  return verified_cert->Equals(other.verified_cert.get()) &&
+  return (!!verified_cert == !!other.verified_cert) &&
+         (!verified_cert || verified_cert->Equals(other.verified_cert.get())) &&
          std::tie(cert_status, has_md2, has_md4, has_md5, has_sha1,
                   has_sha1_leaf, public_key_hashes, is_issued_by_known_root,
                   is_issued_by_additional_trust_anchor,