Add a CHECK-TYPE to MAKE-IOBUF.
Add a CHECK-TYPE to MAKE-IOBUF.

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