Fix: inspekt lint failure when passed invalid path

[sanketsudake]

Description:
When inspekt lint fired with invalid path it hits type error.
As linter.check() return None, comparison between bool and None occurs.

Repro step:
Try,
inspekt lint random_string

[ldoktor]

@Tripples yep, I know this issue (and I'm sorry I forgot to send the version I'm using). This solution works fine, although is quite hard to understand the failure, I put log.warning(...) in case the path returned invalid result and I think it improves the results. Anyway I'm open to discussion, what do you think?

[sanketsudake]

Yes, I agree putting log.warning is required here, though missed it. If you already have solution implemented, please update code. :-)

[ldoktor]

Hello @Tripples I sent my version, it uses a different approach but should also work. Thank you for your work.