Fix bug in STREAM-READ-CHAR-NO-HANG.
Fix bug in STREAM-READ-CHAR-NO-HANG.

tiago4orion/iolib,dkochmanski/iolib,shamazmazum/iolib,tiago4orion/iolib,dkochmanski/iolib,attila-lendvai/iolib,tiago4orion/iolib,deadtrickster/iolib,deadtrickster/iolib,shamazmazum/iolib,sionescu/iolib,lispnik/iolib,sionescu/iolib,sionescu/iolib,deadtrickster/iolib,lispnik/iolib,shamazmazum/iolib,dkochmanski/iolib,attila-lendvai/iolib,lispnik/iolib,attila-lendvai/iolib