| Index: net/base/x509_certificate_mac.cc | 
| diff --git a/net/base/x509_certificate_mac.cc b/net/base/x509_certificate_mac.cc | 
| index f9023fd33188084730251755f477077d6135f3be..839e91ef722fb7c4869f9bb64132e61d141bd742 100644 | 
| --- a/net/base/x509_certificate_mac.cc | 
| +++ b/net/base/x509_certificate_mac.cc | 
| @@ -1128,7 +1128,7 @@ bool X509Certificate::GetSSLClientCertificates( | 
| // Make sure the issuer matches valid_issuers, if given. | 
| // But an explicit cert preference overrides this. | 
| if (!is_preferred && | 
| -        valid_issuers.size() > 0 && | 
| +        !valid_issuers.empty() && | 
| !cert->IsIssuedBy(valid_issuers)) | 
| continue; | 
|  | 
|  |