Handle empty cookie jars gracefully -- dont pout!

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@25 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/cookies.rb

@@ -36,7 +36,7 @@ def initialize(controller)
     # Returns the value of the cookie by +name+ -- or nil if no such cookie exist. You set new cookies using either the cookie method
     # or cookies[]= (for simple name/value cookies without options).
     def [](name)
-      @cookies[name.to_s].value if @cookies[name.to_s]
+      @cookies[name.to_s].value if @cookies.is_a?(Hash) && @cookies[name.to_s]
     end
     
     def []=(name, options)