Get rid of nested functions declarations that are not on top level (causes strict mode warnings)

lib/requestNotifier.js

Index: lib/requestNotifier.js
===================================================================
--- a/lib/requestNotifier.js
+++ b/lib/requestNotifier.js
@@ -38,30 +38,30 @@ if (false)
 }
 else
 {
   // Fall back to user data
   let dataSeed = Math.random();
   let nodeDataProp = "abpNodeData" + dataSeed;
   let windowStatsProp = "abpWindowStats" + dataSeed;
   let windowSelectionProp = "abpWindowSelection" + dataSeed;
-  function getProp(map)
+  let getProp = function(map)
   {
     switch (map)
     {
       case nodeData:
         return nodeDataProp;
       case windowStats:
         return windowStatsProp;
       case windowSelection:
         return windowSelectionProp;
       default:
         return null;
     }
-  }
+  };
 
   setEntry = function(map, key, value) key.setUserData(getProp(map), value, null);
   hasEntry = function(map, key) key.getUserData(getProp(map));
   getEntry = function(map, key) key.getUserData(getProp(map)) || undefined;
 }
 
 /**
  * List of notifiers in use - these notifiers need to receive notifications on