fixing a few test warnings

actionpack/test/controller/filters_test.rb

@@ -758,12 +758,12 @@ def raise_after
 
     def without_exception
       # Do stuff...
-      1 + 1
+      wtf = 1 + 1
 
       yield
 
       # Do stuff...
-      1 + 1
+      wtf += 1
     end
 end
 

actionpack/test/lib/controller/fake_models.rb

@@ -55,6 +55,11 @@ class Post < Struct.new(:title, :author_name, :body, :secret, :written_on, :cost
 
   alias_method :secret?, :secret
 
+  def initialize(*args)
+    super
+    @persisted = false
+  end
+
   def persisted=(boolean)
     @persisted = boolean
   end