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

net/quic/crypto/aead_base_decrypter_openssl.cc

 // Copyright (c) 2013 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/quic/crypto/aead_base_decrypter.h"
 
 #include <openssl/err.h>
 #include <openssl/evp.h>
 
 #include "base/memory/scoped_ptr.h"
 
 using base::StringPiece;
 
 namespace net {
 
 namespace {
 
 // Clear OpenSSL error stack.
 void ClearOpenSslErrors() {
   while (ERR_get_error()) {}
 }
 
 // In debug builds only, log OpenSSL error stack. Then clear OpenSSL error
 // stack.
 void DLogOpenSslErrors() {
 #ifdef NDEBUG
   ClearOpenSslErrors();
 #else
-  while (unsigned long error = ERR_get_error()) {
+  while (uint32_t error = ERR_get_error()) {
     char buf[120];
     ERR_error_string_n(error, buf, arraysize(buf));
     DLOG(ERROR) << "OpenSSL error: " << buf;
   }
 #endif
 }
 
 }  // namespace
 
 AeadBaseDecrypter::AeadBaseDecrypter(const EVP_AEAD* aead_alg,
@@ skipping 88 matching lines @@
 
 StringPiece AeadBaseDecrypter::GetNoncePrefix() const {
   if (nonce_prefix_size_ == 0) {
     return StringPiece();
   }
   return StringPiece(reinterpret_cast<const char*>(nonce_prefix_),
                      nonce_prefix_size_);
 }
 
 }  // namespace net