[diff] Last line of diff of a file fails to highlight inner line byte changes.
Created by: cirosantilli
Normally, byte changes are highlighted darker by Diffy.
However, if it's the last line of the file, bytes changes are not highlighted.
E.g.:
Note how: E is highlighted, but K is not.
Live at: https://gitlab.com/cirosantilli/test0/commit/7cceb3affea757e7fe74fb861282fff83d8015b5
The highlighting %span.idiff was not added.