[llvm] [lit] Fix lit hang on pool join when exception is thrown (PR #131881)

[James Henderson via llvm-commits]

jh7370 wrote:

> Hey @jh7370, was wondering if you would have free cycles to take a look at this soon. If not do you know of anyone else that may be appropriate to review this PR? Thanks.

Sorry, my workload is unlikely to lessen in the next few weeks. I've added a few possible reviewers (@DavidSpickett, @jroelofs, @MaskRay, @pcc) in the hope that someone else can take a look.

https://github.com/llvm/llvm-project/pull/131881