CoEdit для именованных диапазонов и форматированных таблиц

git-svn-id: svn://192.168.3.15/activex/AVS/Sources/TeamlabOffice/trunk/OfficeWeb@64651 954022d7-b5bf-4e40-9824-e11837661b57

Excel/model/Workbook.js

@@ -1011,6 +1011,10 @@ DependencyGraph.prototype = {
         //this.defNameList[nodeId] = null;
         delete this.defNameList[nodeId];
 
+        if(!oldN){
+            return false;
+        }
+
         oldN.changeDefName( newDefName );
 
         this.defNameList[oldN.nodeId] = oldN;