Re: MemFiles on win32 and win64

[Arrrrrrrrr]

Without release: 
    
    
    Test.nim(18)             Test
    Test.nim(16)             main
    Test.nim(10)             runTst1
    memfiles.nim(280)        close
    oserr.nim(113)           raiseOSError
    Error: unhandled exception: unknown OS error [OSError]
    

With release: 
    
    
    Error: unhandled exception: unknown OS error [OSError]