[llvm] Fix crash due to un-checked error in LVReaderHandler::handleArchive method (PR #118951)

[via llvm-commits]

aurelien35 wrote:

Yes, I think this is a good idea, but I never worked on the LLVM tests suite.
I've looked a little to the "tests" subdirs but I'm not sure how to write a new test.
Is there any resources available on that topic?

https://github.com/llvm/llvm-project/pull/118951