[llvm] [BOLT] Gadget scanner: account for BRK when searching for auth oracles (PR #137975)

[Kristof Beyls via llvm-commits]

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

This looks good to me now!
Please do note the inline comment I left about maybe creating a github issue for the FIXME in the test code.

https://github.com/llvm/llvm-project/pull/137975