Tidy up ccncat (exit status, exit cond, fix leak)
Tidy up ccncat (exit status, exit cond, fix leak)

refs #315  Implementation of stream reading in c lib

svartika/ccnx,cawka/ndnx,cawka/ndnx,ebollens/ccnmp,svartika/ccnx,ebollens/ccnmp,svartika/ccnx,cawka/ndnx,svartika/ccnx,cawka/ndnx,ebollens/ccnmp,cawka/ndnx,svartika/ccnx,svartika/ccnx,svartika/ccnx,ebollens/ccnmp