[clang-tools-extra] [clang-tidy] Add recursion protection in ExceptionSpecAnalyzer (PR #66810)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

LGTM, had a small comment. Not sure it's worth mentioning this in the releases notes, it's just a crash fix. But it doesn't hurt I guess.

https://github.com/llvm/llvm-project/pull/66810