mappers: fixing compiler error
mappers: fixing compiler error

StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,chuckatkins/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,chuckatkins/legion,StanfordLegion/legion,sdalton1/legion,StanfordLegion/legion,chuckatkins/legion,sdalton1/legion,chuckatkins/legion