Minor fixes in echo-server example.
Minor fixes in echo-server example.

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