regent: Fix the free-before-use bug in cuda helper
regent: Fix the free-before-use bug in cuda helper

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