Revert of Check for CloseHandle failures even when not debugging

base/threading/platform_thread_win.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 "base/threading/platform_thread.h"
 
 #include "base/debug/alias.h"
 #include "base/debug/profiler.h"
 #include "base/logging.h"
 #include "base/threading/thread_id_name_manager.h"
@@ skipping 96 matching lines @@
   ThreadParams* params = new ThreadParams;
   params->delegate = delegate;
   params->joinable = out_thread_handle != nullptr;
   params->priority = priority;
 
   // Using CreateThread here vs _beginthreadex makes thread creation a bit
   // faster and doesn't require the loader lock to be available.  Our code will
   // have to work running on CreateThread() threads anyway, since we run code
   // on the Windows thread pool, etc.  For some background on the difference:
   //   http://www.microsoft.com/msj/1099/win32/win321099.aspx
-  base::win::ScopedHandle thread_handle(
-      ::CreateThread(nullptr, stack_size, ThreadFunc, params, flags, nullptr));
-  if (!thread_handle.IsValid()) {
+  void* thread_handle =
+      ::CreateThread(nullptr, stack_size, ThreadFunc, params, flags, nullptr);
+  if (!thread_handle) {
     delete params;
     return false;
   }
 
   if (out_thread_handle)
-    *out_thread_handle = PlatformThreadHandle(thread_handle.Take());
+    *out_thread_handle = PlatformThreadHandle(thread_handle);
+  else
+    CloseHandle(thread_handle);
   return true;
 }
 
 }  // namespace
 
 // static
 PlatformThreadId PlatformThread::CurrentId() {
   return ::GetCurrentThreadId();
 }
 
@@ skipping 135 matching lines @@
       return ThreadPriority::REALTIME_AUDIO;
     case THREAD_PRIORITY_ERROR_RETURN:
       DPCHECK(false) << "GetThreadPriority error";  // Falls through.
     default:
       NOTREACHED() << "Unexpected priority: " << priority;
       return ThreadPriority::NORMAL;
   }
 }
 
 }  // namespace base