Chore/small gas optimization

[0xClandestine]

Description

Hey, I saw there was a branch open for optimizations, so I thought I'd contribute where possible.

NOTE: cannot install apeworx to test 👎

Checklist

• [x] I have run vyper and solidity linting
• [ ] I have run the tests on my machine
• [x] I have followed commitlint guidelines
• [x] I have rebased my changes to the latest version of the main branch

[pandadefi]

code has been sent to auditors and changes are not possible anymore

[0xClandestine]

Oh okay no worries, best of luck!