I know there isn't button to do that, but is possible in the future the forum have that feature?
Because I've mistakenly reported my post to a moderator by accident.
So far, I reported 3 posts with 100% accuracy, 1 of the 3 reported is my post. I don't know how that 100% comes, because my post i did report some time ago, maybe still be unhandled or hasn't been seen by a moderator. (It might also a bug percent calculation)
It's a kind of feature that is not useful because not everyone can accidentally report his own post or mistakenly report a post and if you happen to report a post it's up to the moderator to decide if it's worth deleting or retaining.
Just be aware next time of what you are reporting, I have never encountered reporting one's own post you can prevent this by checking all the details and double-checking if it's worth reporting or not.