Eliminate uninitialized instance variable warning

actionpack/test/template/streaming_render_test.rb

@@ -8,7 +8,7 @@ class TestController < ActionController::Base
 class FiberedTest < ActiveSupport::TestCase
   def setup
     view_paths = ActionController::Base.view_paths
-    @assigns = { :secret => 'in the sauce' }
+    @assigns = { :secret => 'in the sauce', :name => nil }
     @view = ActionView::Base.new(view_paths, @assigns)
     @controller_view = TestController.new.view_context
   end
@@ -106,4 +106,4 @@ def test_render_with_nested_streaming_multiple_yields_provide_and_content_for
       buffered_render(:template => "test/nested_streaming", :layout => "layouts/streaming")
   end
 
-end if defined?(Fiber)
\ No newline at end of file
+end if defined?(Fiber)