rem: else displayValue = LITERAL(this.db, currItem, NC_NS + "URL"); 
add: else { try { displayValue = LITERAL(this.db, currItem, NC_NS + "URL"); } catch (e) { displayValue = ""; } } 
context:   treeSelect: function (aEvent)  {    document.commandDispatcher.updateCommands("tree-select");    const kBookmarksTree = document.getElementById("bookmarksTree");    const kStatusBar = document.getElementById("statusbar-text");    var displayValue = "";    if (kBookmarksTree.selectedItems.length == 1) {      var currItem = kBookmarksTree.selectedItems[0]      if (currItem.getAttribute("container") == "true") {        const kRDFCContractID = "@mozilla.org/rdf/container;1";        const kRDFCIID = Components.interfaces.nsIRDFContainer;        const kRDFC = Components.classes[kRDFCContractID].getService(kRDFCIID);        const krSrc = this.RDF.GetResource(NODE_ID(currItem));        try {          kRDFC.Init(this.db, krSrc);          var count = kRDFC.GetCount();          displayValue = gBookmarksShell.getLocaleString("status_foldercount");          displayValue = displayValue.replace(/%num_items%/, count);        }        catch (e) {        }      }      else        displayValue = LITERAL(this.db, currItem, NC_NS + "URL");      if (displayValue.substring(0, 3) == "NC:")        displayValue = "";    }    kStatusBar.label = displayValue;  }
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/b58a221f2fde203195889c6df948140558b290e2/bookmarks.js/clean/xpfe/components/bookmarks/resources/bookmarks.js