the javascript variable 'title' wasn't initialized

koha-tmpl/intranet-tmpl/default/en/acqui/newbiblio.tmpl

@@ -51,7 +51,8 @@ function messenger(X,Y,etc){
 }
 
 function check(f) {
-  quantity=f.quantity.value
+  quantity=f.quantity.value;
+  title=f.quantity.value;
   if (title == "") {
   	alert("Title can't be empty");
 	return false;