This was an obvious bug, the pattern in all similar .inc.php files for other apps is always `$metrics[$something] = $fields`, assigning the array itself to be an element of itself must have been a mistake (that makes it impossible to create application metric based alerts based on disk SMART status).
DO NOT DELETE THIS TEXT
#### Please note
> Please read this information carefully. You can run `./scripts/pre-commit.php` to check your code before submitting.
- [ ] Have you followed our [code guidelines?](http://docs.librenms.org/Developing/Code-Guidelines/)
#### Testers
If you would like to test this pull request then please run: `./scripts/github-apply <pr_id>`, i.e `./scripts/github-apply 5926`
István SárándiandNeil Lathwood
7047a455bf