Issue 3431 - Element Hiding Helper shutdown fails (shutdown is not a function)

chrome/content/frameScript.js

Index: chrome/content/frameScript.js
===================================================================
--- a/chrome/content/frameScript.js
+++ b/chrome/content/frameScript.js
@@ -14,17 +14,22 @@
 
   addMessageListener("ElemHideHelper:Shutdown", onShutdown);
   addMessageListener("ElemHideHelper:GetNodeInfo", onGetNodeInfo);
   addMessageListener("ElemHideHelper:Preview", onTogglePreview);
 
   function onShutdown()
   {
     shutdown();
-    Cu.unload(module);
+    try {
+      Cu.unload(module);
+    } catch (e) {

[saroyanm, 2015/12/21 13:45:18]

Nit: please move catch to it's own line to make it consistent with most of other
similar cases.

[Wladimir Palant, 2015/12/21 19:01:59]

Done.

+      Cu.reportError(e);
+    }
+
     removeMessageListener("ElemHideHelper:Shutdown", onShutdown);
     removeMessageListener("ElemHideHelper:GetNodeInfo", onGetNodeInfo);
     removeMessageListener("ElemHideHelper:Preview", onTogglePreview);
   }
 
   function onGetNodeInfo(message)
   {
     let nodeInfo = getNodeInfo(message.objects.element);