1 files changed, 8 insertions, 2 deletions
diff --git a/www/js/jingles.js b/www/js/jingles.js
index 7e3fb01..be739b4 100644
--- a/www/js/jingles.js
+++ b/www/js/jingles.js
@@ -30,8 +30,10 @@ function jingles_init() {
 }
 
 function jingles_cleanup() {
-  jinglesGroupList.destroy();
-  jinglesGroupList = null;
+  if (jinglesGroupList) {
+    jinglesGroupList.destroy();
+    jinglesGroupList = null;
+  }
 }
 
 var JingleGroupList = function() {
@@ -91,6 +93,10 @@ JingleGroupList.prototype.render = function() {
   });
 };
 
+JingleGroupList.prototype.destroy = function() {
+  // todo: implement
+};
+
 var JingleGroup = function(title, groupName, description, lowcart, highcart, normlevel, trimlevel) {
   this.title = title;
   this.groupName = groupName;