[clang-tools-extra] [clang-tidy] Add C++ member function support to custom bugprone-unsafe-functions matches (PR #117165)

[Piotr Zegar via cfe-commits]

https://github.com/PiotrZSL requested changes to this pull request.

This isn't good, because "::open" and "std::fstream::open" are 2 different things.
Please make sure that those 2 can be distinguished (configured to detect only one or other or both).


https://github.com/llvm/llvm-project/pull/117165