OpenGL Plugin: code cleanup trying to follow code style wiki and updated copyright date

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2850 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoOGL/Src/OS/Win32.h

@@ -1,4 +1,4 @@
-// Copyright (C) 2003-2008 Dolphin Project.
+// Copyright (C) 2003-2009 Dolphin Project.
 
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -15,6 +15,9 @@
 // Official SVN repository and contact information can be found at
 // http://code.google.com/p/dolphin-emu/
 
+#ifndef _WIN32_H_
+#define _WIN32_H_
+
 #pragma once
 
 #include "stdafx.h"
@@ -31,3 +34,5 @@ namespace EmuWindow
     void Close();
     void SetSize(int displayWidth, int displayHeight);
 }
+
+#endif // _WIN32_H_