Changed code to allow for removal of the #include <windows.h> from wxprec.h for windows

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5497 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/dialup.cpp

@@ -38,6 +38,8 @@
     #include "wx/event.h"
 #endif
 
+#include "wx/msw/private.h"  // must be before #include "dynlib.h"
+
 #if !wxUSE_DYNLIB_CLASS
     #error You need wxUSE_DYNLIB_CLASS to be 1 to compile dialup.cpp.
 #endif
@@ -54,8 +56,6 @@
 
 #include <wininet.h>
 
-#include "wx/msw/private.h"
-
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------