Minor suggested edits following review of pull request #11499

[jayaddison]

Feature or Bugfix

• Refactoring

Purpose

• Two small cosmetic edits as suggestions following code review of Re-structure the linkcheck builder #11499.

Detail

• Omit a variable that is unused aside from a return statement on the subsequent line.
• Extract a variable for readability, and to reduce the code complexity of a code line.

Relates

• Follows-on from pull request Re-structure the linkcheck builder #11499.

cc @AA-Turner

[AA-Turner]

Thanks!