Ah, yes, the false reporting.
IF, and I say "if," you did not say anything that Riot would consider offensive, you've nothing to worry about. I can no longer count the number of times I have been reported for offensive language and not typed one single word in to the chat box. You won't be punished for a false report. I'm told that those submitting false reports lose credibility on future reports though I don't know how Riot rates such things. To be honest, I would like to see those who submit false reports face the same stacking penalties that those who are suspended do. If I file a report with Playstation Online, the system flashes a warning to you stating that submitting a false report can result in action against your account. Then you're allowed to hit "submit." I'd love to see other companies pick that up. I'm sure people have better things to do than deal with false reports.