Minor comment updates to CertVerify related code.

net/cert/cert_verify_result.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/cert/cert_verify_result.h"
 
 #include <tuple>
 
 #include "net/cert/x509_certificate.h"
 
@@ skipping 18 matching lines @@
   has_sha1_leaf = false;
   is_issued_by_known_root = false;
   is_issued_by_additional_trust_anchor = false;
   common_name_fallback_used = false;
 
   public_key_hashes.clear();
   ocsp_result = OCSPVerifyResult();
 }
 
 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,
                   common_name_fallback_used, ocsp_result) ==
              std::tie(other.cert_status, other.has_md2, other.has_md4,
                       other.has_md5, other.has_sha1, other.has_sha1_leaf,
                       other.public_key_hashes, other.is_issued_by_known_root,
                       other.is_issued_by_additional_trust_anchor,
                       other.common_name_fallback_used, other.ocsp_result);
 }
 
 }  // namespace net