Remove dead protocols.js symlinks.

common/modules/dom.jsm

@@ -302,6 +302,9 @@ var DOM = Class("DOM", {
     },
 
     get editor() {
+        if (!this.length)
+            return;
+
         this[0] instanceof Ci.nsIDOMNSEditableElement;
         if (this[0].editor instanceof Ci.nsIEditor)
             return this[0].editor;
@@ -511,6 +514,9 @@ var DOM = Class("DOM", {
                         elem.setAttributeNS(ns, k, v);
             });
 
+        if (!this.length)
+            return null;
+
         if (Set.has(hooks, key) && hooks[key].get)
             return hooks[key].get.call(this, this[0]);
 

common/modules/messages.jsm

@@ -12,7 +12,6 @@ defineModule("messages", {
     require: ["services", "util"]
 }, this);
 
-// TODO: Lazy instantiation
 var Messages = Module("messages", {
 
     init: function init(name) {

common/modules/overlay.jsm

@@ -498,7 +498,7 @@ var Overlay = Module("Overlay", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReferen
                 Object.defineProperty(object, k, desc);
 
                 if (callable(value)) {
-                    let sentinel = "(function DactylOverlay() {}())"
+                    var sentinel = "(function DactylOverlay() {}())"
                     value.toString = function toString() toString.toString.call(this).replace(/\}?$/, sentinel + "; $&");
                     value.toSource = function toSource() toSource.toSource.call(this).replace(/\}?$/, sentinel + "; $&");
                 }