[clang] [clang][NFC] Reformat suspicious condition (PR #89923)

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cor3ntin wrote:

I think CI is having some difficulties. No need to wait for it for this.
Thanks a lot for your first contribution!
We have some good first issues if you want to have a go at some more contributions
https://github.com/llvm/llvm-project/issues?q=is%3Aissue+is%3Aopen+good+first+issues+label%3A%22good+first+issue%22 

https://github.com/llvm/llvm-project/pull/89923