Unexpected crash of app using bugout

Hey , i have noticed this weird exception that crashes my app using bugout.

This happens on scenarios that network connectivity is under restoring its state back to online , for example after a laptop hibernation.

https://github.com/chr15m/bugout/blob/62ddbc85365fc508eddcb8d5ab3a35b3ed000712/index.js#L112

```
/home/t13/Documents/proj/app/node_modules/bugout/index.js:112
if (this.torrent.discovery.tracker) {
^

TypeError: Cannot read properties of null (reading 'tracker')
at Bugout._onTorrent (/home/t13/Documents/proj/app/node_modules/bugout/index.js:112:30)
at /home/t13/Documents/proj/app/node_modules/bugout/index.js:96:14
at /home/t13/Documents/proj/app/node_modules/bugout/index.js:505:15
at _onseed (/home/t13/Documents/proj/app/node_modules/webtorrent/index.js:364:41)
at /home/t13/Documents/proj/app/node_modules/webtorrent/index.js:358:9
at end (/home/t13/Documents/proj/app/node_modules/run-parallel/index.js:21:15)
at done (/home/t13/Documents/proj/app/node_modules/run-parallel/index.js:25:10)
at each (/home/t13/Documents/proj/app/node_modules/run-parallel/index.js:31:7)
at Torrent. (/home/t13/Documents/proj/app/node_modules/run-parallel/index.js:46:37)
at Object.onceWrapper (node:events:628:28)

Node.js v20.5.0
error Command failed with exit code 1.
```

Solution to that could be as easy as that :
```js
if (this?.torrent?.discovery?.tracker) {
```

Let me know your thoughts on this..

Start in index.js around line 112 and trace the _onTorrent callback through the nearby code and callbacks shown in the stack trace. Reproduce or inspect the network-restoration scenario after laptop hibernation, then verify that a missing torrent discovery object no longer crashes the app and that existing behavior remains intact.

Written by the indexing model from the issue text.