Fix crypto_unittests on Windows BoringSSL port.

crypto/hmac_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 "crypto/hmac.h"
 
 #include <openssl/hmac.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 36 matching lines @@
   plat_->key.assign(plat_->key.size(), 0);
   STLClearObject(&plat_->key);
 }
 
 bool HMAC::Sign(const base::StringPiece& data,
                 unsigned char* digest,
                 size_t digest_length) const {
   DCHECK(!plat_->key.empty());  // Init must be called before Sign.
 
   ScopedOpenSSLSafeSizeBuffer<EVP_MAX_MD_SIZE> result(digest, digest_length);
   return ::HMAC(hash_alg_ == SHA1 ? EVP_sha1() : EVP_sha256(),

[Ryan Sleevi, 2014/10/01 20:34:03]

Can also go the cheap way that's more idiomatic for Windows programmers

return !!::HMAC(...)

[davidben, 2014/10/02 00:21:36]

Done.

                 &plat_->key[0], plat_->key.size(),
                 reinterpret_cast<const unsigned char*>(data.data()),
                 data.size(),
-                result.safe_buffer(), NULL);
+                result.safe_buffer(), NULL) != NULL;
 }
 
 }  // namespace crypto