Fix parser horusec

[srburton]

I'm doing this update because when trying to import a report from Horusec you get the following error:

I noticed that the reports of the new version of Horusec the "line" comes empty where it ends up breaking the parser of the integer:

[renatosazup-zz]

Ok @Maffooch

[damiencarol]

@srburton @renatosazup : the comment of @Maffooch is still there, we need a unit test with a report that don't have the line (empty value) to show that the fix works.

[srburton]

@damiencarol added unit test!

[Maffooch]

@srburton Thanks for the new scan report!

Please test against it in the horusec unit test file here

[srburton]

@Maffooch check my fix, please?

[Maffooch]

@damiencarol leaving merge to you if it looks good