poll results help

I am sorry I know that this has been covered before but I couldn't seem to find the code that you were showing on how to make it so that the results do not show up. I am php dumb so I need simple instructions on where it is. I know that I am supposed to change some line of code in the class_poll.php file but I can't seem to find the code that I am to change. Could you tell me what function it is under and break it down just a bit more.

I want it to just say "thank you for voting" and not show results. Thank you