Check for CloseHandle failures even when not debugging

base/threading/platform_thread_win.cc

Index: base/threading/platform_thread_win.cc
diff --git a/base/threading/platform_thread_win.cc b/base/threading/platform_thread_win.cc
index 25973bcada928651091da0fa7025356f34604602..dc36a140447a68523fd1f58be0aef64715fae33c 100644
--- a/base/threading/platform_thread_win.cc
+++ b/base/threading/platform_thread_win.cc
@@ -114,17 +114,15 @@ bool CreateThreadInternal(size_t stack_size,
   // 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
-  void* thread_handle =
-      ::CreateThread(nullptr, stack_size, ThreadFunc, params, flags, nullptr);
-  if (!thread_handle) {
+  base::win::ScopedHandle thread_handle(
+      ::CreateThread(nullptr, stack_size, ThreadFunc, params, flags, nullptr));
+  if (!thread_handle.IsValid()) {
     delete params;
     return false;
   }
 
   if (out_thread_handle)
-    *out_thread_handle = PlatformThreadHandle(thread_handle);
-  else
-    CloseHandle(thread_handle);
+    *out_thread_handle = PlatformThreadHandle(thread_handle.Take());
   return true;
 }