Fix command line argument + un-catched exception

[Kile]

Hi there!
Awesome project!

I have started to have an issue a few weeks ago where Apple Music will stop being responsive to pause and skip buttons. I am not sure if this is because of this library, so I looked into it.

I cannot consistently reproduce this issue, but the one time I could, I found an error in the logs at the same time:

Closing connection to Discord RPC
Error: (1000) Request has been terminated
Possible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.
    at DiscordIPC.#read (https://deno.land/x/[email protected]/src/conn.ts:180:11)
    at eventLoopTick (ext:core/01_core.js:175:7)
    at async https://deno.land/x/[email protected]/src/conn.ts:49:11

Looking into the code, it seems this.rpc.close(); is trusted to not error and any error coming from it is not catched. So in this PR I added a try block around it. Even if this is not the root cause of my issue, it is still a good idea to catch any errors from this line of code.

While running this code locally, I also noticed that it complains about

�[0m�[1m�[31merror�[0m: unexpected argument '--allow-import' found

  tip: a similar argument exists: '--allow-hrtime'
  tip: to pass '--allow-import' as a value, use '-- --allow-import'

Usage: deno run [OPTIONS] [SCRIPT_ARG]...

so I followed the suggestion and used --allow-hrtime instead. If this is intended or my system is outdated feel free to let me know and I will revert this change.

[NextFire]

Hi! Can you tell me which deno version are you currently running? (deno -V)