[clang] [clang-tools-extra] [clang-tidy] Fix performance-unnecessary-value-param (PR #109145)

[Nikita Popov via cfe-commits]

https://github.com/nikic approved this pull request.

The code change looks good to me, but not familiar with clang-tidy testing.

https://github.com/llvm/llvm-project/pull/109145