realm: small deadlock fix to reducetest
realm: small deadlock fix to reducetest

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