This comment by @Gernot in response to
Not all questions are worth an answer or to be preserved, but nevertheless should be solved. Just think of the syntactic errors, like missing braces, where the solution will help no one else. Or sometimes the OP reports him/herself to have solved the problem, somehow. What's wrong is to give as reason "because solved in comments". I fully agree that this is no reason. Instead it should be something like "syntactic error" or "unclear". Or, as Clemens points out, there should be a real answer, if there is any chance that someone else with the same problem will stumble across the post. – gernot yesterday
prompts this question from me:
If the question is really a one-off typo that no one else will encounter (or find this question if they do) should we answer (perhaps in a comment) and suggest that the OP delete the question when satisfied with the answer? Perhaps if the OP is a newbie, thank him/her for asking.