In this question I agreed on the closing vote:
I'm voting to close this question as off-topic because its better suited for Code Review
Using the normal way to flag for closing I would choose: Flag > Closing > Off-Topic > This question belongs on another site in the Stack Exchange network. However this site, Code Review, is not listed there. If there were no comment before, I would have used Flag >  in need of moderator intervention.
Is it sufficient to do an upvote of this vote to close comment? I.e. will the upvote be counted as a vote to close?
I mention this because in the review process the votes to close automatically generate a comment, and if it already exists upvote it.