if on windows, requeue a file if the error has an OK status as well

Retry when we get an OK status on Windows.

This is occuring for me on Windows 8 64bit, and for <a href="http://stackoverflow.com/questions/16425458/error-ok-when-using-fs-readfile-in-node-js-after-some-iteration-of-about-a">this guy</a> on Windows 7 64bit.