Prompted by this question on SO: https://stackoverflow.com/questions/20640219/, although it's not the first time I've encountered similar.
Since posting the question, the OP realised they misunderstood, and the question should not have been asked in the first place, so there really is no benefit in the question remaining on the site.
How about adding 'No question to answer' or perhaps more accurately 'No answer required.' as a reason to close for cases where the question never needed to be asked.