[msvcrt]Check for EOF before correcting CR/LF (bug 21494)

[Uwe Bonnes]

Check for EOF before correcting CR/LF (bug 21494)

Tested with WINE=/path/to/64bit/wine sh winetricks nocrashdialog (no more crash)
I didn't find a testcase to provoke the error however

-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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