Add null check in AutorouteEntries

[MikeAlhayek]

For some reason the AutorouteEntries is throwing a null exception because the passed value being used is null.
Adding null check to provide the correct error.

[hishamco]

I think you can apply this to all public APIs in the module, instead of doing it in a single class

[MikeAlhayek]

Probably. I just did it here because I encountered an issue with this class

[hishamco]

Believe it or not, all public APIs should be protected by such guards

[Piedone]

Yeah, though that class didn't really have similar methods (if we want to be diligent, all of them need null-checks though, but that's probably unnecessary, since null values should be a coding problem already and they'll fail anyway). Nevertheless, please do wait for an approve next time, Mike, until we have discussions settled under a PR.

[hishamco]

but that's probably unnecessary, since null values should be a coding problem already and they'll fail anyway)

Public & protected APIs should use guards to save us from unexpected results

[MikeAlhayek]

Yes I agree. That is something we should do thought out the project.