Fixes for re-enabling more MSVC level 4 warnings: chrome/browser/ edition

chrome/browser/component_updater/sw_reporter_installer_win.cc

 // Copyright (c) 2014 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 "chrome/browser/component_updater/sw_reporter_installer_win.h"
 
 #include <string>
 #include <vector>
 
 #include "base/base_paths.h"
@@ skipping 236 matching lines @@
       FROM_HERE,
       base::Bind(&base::PathExists, SwReporterInstallerTraits::install_dir()),
       base::Bind(&MaybeRegisterComponent, cus, prefs));
 
   // Run the reporter if there is a pending execution request.
   int execute_try_count = prefs->GetInteger(prefs::kSwReporterExecuteTryCount);
   if (execute_try_count > 0) {
     // Retrieve the results if the pending request has completed.
     base::win::RegKey srt_key(
         HKEY_CURRENT_USER, kSoftwareRemovalToolRegistryKey, KEY_READ);
-    DWORD exit_code = -1;
+    DWORD exit_code;
     if (srt_key.Valid() &&
         srt_key.ReadValueDW(kExitCodeRegistryValueName, &exit_code) ==
             ERROR_SUCCESS) {
       ReportUmaStep(SW_REPORTER_REGISTRY_EXIT_CODE);
       ReportAndClearExitCode(exit_code);
       return;
     }
 
     // The previous request has not completed. The reporter will run again
     // when ComponentReady is called or the request is abandoned if it has
     // been tried too many times.
     prefs->SetInteger(prefs::kSwReporterExecuteTryCount, --execute_try_count);
     if (execute_try_count > 0)
       ReportUmaStep(SW_REPORTER_STARTUP_RETRY);
     else
       ReportUmaStep(SW_REPORTER_RETRIED_TOO_MANY_TIMES);
   }
 }
 
 void RegisterPrefsForSwReporter(PrefRegistrySimple* registry) {
   registry->RegisterIntegerPref(prefs::kSwReporterExecuteTryCount, 0);
 }
 
 }  // namespace component_updater