Fix wrong parsing argument starting index N

What is the bug

The staring index of cmake_parse_argument is wrong in two functions

How do you fix it

Fix the starting index N.

How urgent is the bugfix

• I need it as soon as possible
• I can wait for a couple of days
• None of my current codes is directly affected

Mandatory steps before review

• Gitlab CI passes (Hint: use make format for linting)
• Bugfix is covered by additional unit tests
• Mark the merge request as ready by removing Draft:

Mandatory steps before merge

• Reviewed by a maintainer
• Incorporate review suggestions
• Prior to merging, please remove any boilerplate from the MR description, retaining only the What is the bug and How do you fix it section to maintain

You are not supposed to merge this request by yourself, the maintainers of libiconmath take care of this action!

added ready for review label

requested review from @k202170

assigned to @b382190

added 2 commits

• 98e24f5b - 1 commit from branch main
• 751e13e8 - Fix wrong parsing argument starting index N

Compare with previous version

marked the checklist item Reviewed by a maintainer as completed

marked the checklist item Prior to merging, please remove any boilerplate from the MR description, retaining only the What is the bug and How do you fix it section to maintain as completed

marked the checklist item Incorporate review suggestions as completed

marked the checklist item Gitlab CI passes (Hint: use make format for linting) as completed

merged

mentioned in commit bb2040d4