Roblox RPC mutli-instance bug

**About:** Roblox RPC does not seem to close after being opened repeatedly.
**Author:** _ShinonArtZ_ ([**post**](https://devforum.roblox.com/t/roblox-rpc-roblox-rich-presence-for-discord/2047129/20))

![image](https://user-images.githubusercontent.com/52884117/201635757-67d78c22-8bcb-488a-83cb-49f1505ffaf9.png)