fixed build on newer OpenSuse
fixed build on newer OpenSuse

MrTheodor/csg,votca/csg,votca/csg,junghans/csg,MrTheodor/csg,MrTheodor/csg,votca/csg,MrTheodor/csg,junghans/csg,junghans/csg,votca/csg,junghans/csg,junghans/csg,junghans/csg,MrTheodor/csg