Fix a bug in TGeoCtub::Safety. The array saf is dimensioned as saf[4],

but TMath::LocMax(5,saf) was called instead of TMath::Locmax(4,saf).


git-svn-id: http://root.cern.ch/svn/root/trunk@20945 27541ba8-7e3a-0410-8455-c3a389f83636