Coverity: Initialize member variables.

ui/views/controls/native_control_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 "ui/views/controls/native_control_win.h"
 
 #include <windowsx.h>
 
 #include "base/logging.h"
 #include "ui/base/accessibility/accessibility_types.h"
 #include "ui/base/l10n/l10n_util_win.h"
 #include "ui/base/view_prop.h"
 #include "ui/base/win/hwnd_util.h"
 #include "ui/views/controls/combobox/combobox.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/widget/widget.h"
 
 using ui::ViewProp;
 
 const char kNativeControlWinKey[] = "__NATIVE_CONTROL_WIN__";
 
 namespace views {
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeControlWin, public:
 
-NativeControlWin::NativeControlWin() {
+NativeControlWin::NativeControlWin() : original_wndproc_(NULL) {
 }
 
 NativeControlWin::~NativeControlWin() {
   HWND hwnd = native_view();
   if (hwnd) {
     // Destroy the hwnd if it still exists. Otherwise we won't have shut things
     // down correctly, leading to leaking and crashing if another message
     // comes in for the hwnd.
     Detach();
     DestroyWindow(hwnd);
@@ skipping 179 matching lines @@
   } else if (message == WM_DESTROY) {
     native_control->props_.clear();
     ui::SetWindowProc(window, native_control->original_wndproc_);
   }
 
   return CallWindowProc(native_control->original_wndproc_, window, message,
                         w_param, l_param);
 }
 
 }  // namespace views