fix http://bugzserver/show_bug.cgi?id=22943

git-svn-id: svn://192.168.3.15/activex/AVS/Sources/TeamlabOffice/trunk/OfficeWeb@54265 954022d7-b5bf-4e40-9824-e11837661b57

Excel/model/clipboard.js

@@ -393,7 +393,8 @@
 				{
 					var t = this;
 					var  table = t._makeTableNode(range, worksheet, isCut);
-					t.copyText = t._getTextFromTable(table);
+					if(table !== false)
+						t.copyText = t._getTextFromTable(table);
 					return true;
 				}
 				return false;