Changing [].flatten to array wrapper method

lib/cancan/controller_resource.rb

@@ -245,11 +245,11 @@ def instance_name
     end
 
     def collection_actions
-      [:index] + [@options[:collection]].flatten
+      [:index] + Array(@options[:collection])
     end
 
     def new_actions
-      [:new, :create] + [@options[:new]].flatten
+      [:new, :create] + Array(@options[:new])
     end
 
     private