issue #362 - firefox: block image broken on youtube thumbnails (recommended videos)

lib/requestNotifier.js

Index: lib/requestNotifier.js
===================================================================
--- a/lib/requestNotifier.js
+++ b/lib/requestNotifier.js
@@ -27,6 +27,7 @@
 let nodeData = new WeakMap();
 let windowStats = new WeakMap();
 let windowSelection = new WeakMap();
+let requestEntryMaxId = 0;
 
 let setEntry, hasEntry, getEntry;
 // Last issue(Bug 982561) preventing us from using WeakMap fixed for FF version 32
@@ -244,16 +245,19 @@
     let data = getEntry(nodeData, node);
     if (typeof data != "undefined")
     {
+      let entry = null;
       // Look for matching entry
       for (let k in data)
       {
-        let entry = data[k];
-        if ((typeof type == "undefined" || entry.type == type) &&
-            (typeof location == "undefined" || entry.location == location))
+        if ((!entry || entry.id < data[k].id) &&
+            (typeof type == "undefined" || data[k].type == type) &&
+            (typeof location == "undefined" || data[k].location == location))
         {
-          return [node, entry];
+          entry = data[k];
         }
       }
+      if (entry)
+        return [node, entry];
     }
 
     // If we don't have any match on this node then maybe its parent will do
@@ -278,6 +282,7 @@
   this.thirdParty = thirdParty;
   this.location = location;
   this.filter = filter;
+  this.id = ++requestEntryMaxId;
 
   this.attachToNode(node);
 
@@ -319,6 +324,11 @@
 RequestEntry.prototype =
 {
   /**
+   * id of request (used to determine last entry attached to a node)
+   * @type integer
+   */
+  id: 0,
+  /**
    * Content type of the request (one of the nsIContentPolicy constants)
    * @type Integer
    */