rem: if (!usr.uid || !this.members.get(usr.name)) 
add: if (!usr || !usr.uid || !this.members.get(usr.name)) 
context: function isUserMember(usr) {   if (!usr.uid || !this.members.get(usr.name))      return false;   return true;}
meta: 993	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/993/fa6303fd13c5113d5621307c83be302a6694af33/securityFunctions.js/buggy/code/Site/securityFunctions.js