fix typo in `numeric_arithmetic` logic (#13820)

Looks like typo for me.

Looking at blame
https://github.com/rust-lang/rust-clippy/commit/b76b0aeb63948fecca6d6f603f47c6648059048a#diff-ac15e787d7d276b24f251f4f5bdedf1e6ac81aa1e2ea0db27219e9a7fa8b0b30L66
the same typo was before.

Is logic here actually correct? Tests passed locally, but i expected
some changes.

changelog: none