Add error initialization for network request class

net/cert_net/cert_net_fetcher_impl.cc

 // Copyright 2015 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.
 //
 // Overview
 //
 // The main entry point is CertNetFetcherImpl. This is an implementation of
 // CertNetFetcher that provides a service for fetching network requests.
 //
 // The interface for CertNetFetcher is synchronous, however allows
@@ skipping 241 matching lines @@
     DCHECK(!job_);
   }
 
   // A non-owned pointer to the job that is executing the request.
   Job* job_ = nullptr;
 
   // May be written to from network thread, or from the caller thread only when
   // there is no work that will be done on the network thread (e.g. when the
   // network thread has been shutdown before the request begins). See comment in
   // SignalImmediateError.
-  Error error_;
+  Error error_ = OK;
   std::vector<uint8_t> bytes_;
 
   // Indicates when |error_| and |bytes_| have been written to.
   base::WaitableEvent completion_event_;
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestCore);
 };
 
@@ skipping 511 matching lines @@
   std::unique_ptr<AsyncCertNetFetcherImpl> impl_;
 };
 
 }  // namespace
 
 scoped_refptr<CertNetFetcher> CreateCertNetFetcher(URLRequestContext* context) {
   return make_scoped_refptr(new CertNetFetcherImpl(context));
 }
 
 }  // namespace net