Switch to OpenSSL's |EVP_PKEY_up_ref| signature.

crypto/ec_private_key.cc

 // Copyright (c) 2012 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/ec_private_key.h"
 
 #include <openssl/bytestring.h>
 #include <openssl/ec.h>
 #include <openssl/evp.h>
 #include <openssl/mem.h>
@@ skipping 128 matching lines @@
   std::unique_ptr<ECPrivateKey> result(new ECPrivateKey());
   result->key_ = EVP_PKCS82PKEY(p8_decrypted.get());
   if (!result->key_ || EVP_PKEY_id(result->key_) != EVP_PKEY_EC)
     return nullptr;
 
   return result;
 }
 
 std::unique_ptr<ECPrivateKey> ECPrivateKey::Copy() const {
   std::unique_ptr<ECPrivateKey> copy(new ECPrivateKey());
-  if (key_)
-    copy->key_ = EVP_PKEY_up_ref(key_);
+  if (key_) {
+    EVP_PKEY_up_ref(key_);
+    copy->key_ = key_;
+  }
   return copy;
 }
 
 bool ECPrivateKey::ExportPrivateKey(std::vector<uint8_t>* output) const {
   OpenSSLErrStackTracer err_tracer(FROM_HERE);
   uint8_t* der;
   size_t der_len;
   AutoCBB cbb;
   if (!CBB_init(cbb.get(), 0) || !EVP_marshal_private_key(cbb.get(), key_) ||
       !CBB_finish(cbb.get(), &der, &der_len)) {
@@ skipping 69 matching lines @@
     return false;
   }
 
   output->assign(reinterpret_cast<const char*>(buf), sizeof(buf));
   return true;
 }
 
 ECPrivateKey::ECPrivateKey() : key_(nullptr) {}
 
 }  // namespace crypto