[clang] [analyzer][NFC] Minor cleanup in two test files. (PR #100570)

[Donát Nagy via cfe-commits]

NagyDonat wrote:

In my opinion the "put unrelated things into separate commits" guideline is just a corollary of the "don't create commits that are too complex" rule. If a change is extremely trivial, I'm actively trying to aggregate it with other tangentially related changes, because one simple commit is easier to read and handle than two (or five or ten) even smaller commits.

https://github.com/llvm/llvm-project/pull/100570