Fix conditional, I think

[mike3985]

Am I missing something or was the first of these two lines doing nothing? It looks like it was introduced in this big refactor https://github.com/alphagov/publishing-api/commit/c6ea837b6515b2ef4400e00f3400670c6076a17f, but that hasn't helped clarify things for me.

I don't think this changes the behaviour of the method, but does allow an earlier exit if the first, presumably quicker, check passes. So I'm assuming this was the intention..?