Bug 851242 - Opening the Add-ons Manager via the -chrome command line switch doesn't load add-on list correctly. r=Unfocused

toolkit/mozapps/extensions/content/extensions.js

@@ -102,7 +102,7 @@ function initialize(event) {
 
   // Allow passing in a view through the window arguments
   if ("arguments" in window && window.arguments.length > 0 &&
-      "view" in window.arguments[0]) {
+      window.arguments[0] !== null && "view" in window.arguments[0]) {
     view = window.arguments[0].view;
   }