Add missing file closing, fixing test on Windows.
Add missing file closing, fixing test on Windows.

You can't unlink and then re-spurt a file that was not closed on
Windows.

dankogai/roast,perl6/roast,b2gills/roast,dogbert17/roast,cygx/roast,b2gills/roast,bitrauser/roast,zostay/roast,dankogai/roast,dankogai/roast,bitrauser/roast,cygx/roast,skids/roast,cygx/roast,dogbert17/roast,skids/roast,zostay/roast,b2gills/roast,skids/roast,zostay/roast