rem: return gDBConn ? gDBConn : getService().openDatabase(getTestDB()); 
add: return gDBConn ? gDBConn : gDBConn = getService().openDatabase(getTestDB()); 
context: function getOpenedDatabase(){  return gDBConn ? gDBConn : getService().openDatabase(getTestDB());}
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/2b75ab23596f513f1778d55392104077908d2fe9/head_storage.js/buggy/storage/test/unit/head_storage.js