Use uint32_t to hold return values from ERR_get_error() and ERR_peek_error().

net/cert/test_root_certs_openssl.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/test_root_certs.h"
 
 #include <openssl/err.h>
 #include <openssl/x509v3.h>
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "crypto/openssl_util.h"
 #include "net/cert/x509_certificate.h"
 
 namespace net {
 
 bool TestRootCerts::Add(X509Certificate* certificate) {
   if (!X509_STORE_add_cert(X509Certificate::cert_store(),
                            certificate->os_cert_handle())) {
-    unsigned long error_code = ERR_peek_error();
+    uint32_t error_code = ERR_peek_error();
     if (ERR_GET_LIB(error_code) != ERR_LIB_X509 ||
         ERR_GET_REASON(error_code) != X509_R_CERT_ALREADY_IN_HASH_TABLE) {
       crypto::ClearOpenSSLERRStack(FROM_HERE);
       return false;
     }
     ERR_clear_error();
   }
 
   temporary_roots_.push_back(certificate);
   return true;
@@ skipping 19 matching lines @@
       return true;
   }
   return false;
 }
 
 TestRootCerts::~TestRootCerts() {}
 
 void TestRootCerts::Init() {}
 
 }  // namespace net