Fix a memory error introduced by issue 1922083004, revealed by the

components/ntp_snippets/ntp_snippets_fetcher.cc

 // Copyright 2016 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 "components/ntp_snippets/ntp_snippets_fetcher.h"
 
 #include <stdlib.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 155 matching lines @@
   fetch_start_time_ = tick_clock_->NowTicks();
 
   if (UseHostRestriction() && hosts_.empty()) {
     FetchFinished(OptionalSnippets(), FetchResult::EMPTY_HOSTS,
                   /*extra_message=*/std::string());
     return;
   }
 
   // Translate the BCP 47 |language_code| into a posix locale string.
   char locale[ULOC_FULLNAME_CAPACITY];
-  UErrorCode error;
+  UErrorCode error = U_ZERO_ERROR;
   uloc_forLanguageTag(language_code.c_str(), locale, ULOC_FULLNAME_CAPACITY,
                       nullptr, &error);
   DLOG_IF(WARNING, U_ZERO_ERROR != error)
       << "Error in translating language code to a locale string: " << error;
   locale_ = locale;
 
   count_to_fetch_ = count;
 
   bool use_authentication = UseAuthentication();
 
@@ skipping 208 matching lines @@
                       tick_clock_->NowTicks() - fetch_start_time_);
   UMA_HISTOGRAM_ENUMERATION("NewTabPage.Snippets.FetchResult",
                             static_cast<int>(result),
                             static_cast<int>(FetchResult::RESULT_MAX));
 
   if (!snippets_available_callback_.is_null())
     snippets_available_callback_.Run(std::move(snippets));
 }
 
 }  // namespace ntp_snippets