Fix for commdlg on Mingw

[Steven Edwards]

> Sure, all Wine dlls which use only win32 APIs for their needs 
> should work on ReactOS. Besides dll separation there are 
> other issues: direct use of fork, getpid and similar 
> "unixisms", direct access to unix file system 
> (DOSFS_GetFullName/open/mmap/etc), direct access for unix devices.

I know you guys like to avoid "unixisms" so when we do encounter them.
We might not be have option but for ReactOS to have those files forked.
We will burn that bridge when we get to it =)

Thanks
Steven

"Every revolution was once a thought in one man's mind"
- Ralph Waldo Emerson