fix a memory leak when do enumerating
fix a memory leak when do enumerating

vcrhonek/openwsman,vcrhonek/openwsman,kkaempf/openwsman,kkaempf/openwsman,kolbma/openwsman,photron/openwsman,kolbma/openwsman,vcrhonek/openwsman,kkaempf/openwsman,Openwsman/openwsman,photron/openwsman,kolbma/openwsman,kkaempf/openwsman,Openwsman/openwsman,vcrhonek/openwsman,kolbma/openwsman,kkaempf/openwsman,Openwsman/openwsman,photron/openwsman,Openwsman/openwsman,kolbma/openwsman,kkaempf/openwsman,photron/openwsman,Openwsman/openwsman,vcrhonek/openwsman,kolbma/openwsman,Openwsman/openwsman,vcrhonek/openwsman,Openwsman/openwsman,kolbma/openwsman,vcrhonek/openwsman,photron/openwsman,kkaempf/openwsman,photron/openwsman,photron/openwsman