[clang-tools-extra] [clang-tidy] Fix invalid fixit from modernize-use-ranges for nullptr used with std::unique_ptr (PR #127162)

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Andrewyuan34 wrote:

> Thanks for you contributions!
> 
> Some tips:
> 
> 1. run git-clang-format -f before commit change
> 2. actually you don't need to rebase often. but in past several weeks we have a major release and it causes release notes are cleared. in this case, rebase is needed.
> 3. After several successfully land, you can request write access. then you can merge it by yourself.

I really appreciate all of the suggestions! Will take those in mind. Looking forward to the day I have write access.

https://github.com/llvm/llvm-project/pull/127162