Include wx/menuitem.h according to precompiled headers of wx/wx.h (with other minor cleaning).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39787 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/window.cpp

@@ -47,6 +47,7 @@
     #include "wx/intl.h"
     #include "wx/log.h"
     #include "wx/textctrl.h"
+    #include "wx/menuitem.h"
 #endif
 
 #if wxUSE_OWNER_DRAWN && !defined(__WXUNIVERSAL__)
@@ -74,8 +75,6 @@
     #endif
 #endif
 
-#include "wx/menuitem.h"
-
 #include "wx/msw/private.h"
 
 #if wxUSE_TOOLTIPS