pmdalmsensors: fix a qa/1480 issue when sensors writes on stderr
pmdalmsensors: fix a qa/1480 issue when sensors writes on stderr

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