Remove compile warnings
Remove compile warnings

Change-Id: Ie98d22db40fb38742c3cd1fb0ae44fe1c0bbf2ec
Reviewed-by: Lorn Potter <0e329dfd61bdd4e2b2b708a31f12f199a7656feb@nokia.com>

richardmg/qtsensors,richardmg/qtsensors,kobolabs/qtsensors,richardmg/qtsensors,mer-qt/qtsensors,kobolabs/qtsensors,mer-qt/qtsensors,mer-qt/qtsensors,richardmg/qtsensors,kobolabs/qtsensors,mer-qt/qtsensors,mer-qt/qtsensors,kobolabs/qtsensors,richardmg/qtsensors