Add missing block arg to country_of_birth?
Add missing block arg to country_of_birth?

Add response arg to the next_node for this question which was lost as
part of a rebase of PR #2367 with master branch.
alphagov/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,aledelcueto/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers,stwalsh/smart-answers,alphagov/smart-answers,alphagov/smart-answers,alphagov/smart-answers,aledelcueto/smart-answers,stwalsh/smart-answers