qa/src/pmcdgone.c: check system() return value in a couple of places
qa/src/pmcdgone.c: check system() return value in a couple of places

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp