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

[Carlos Alberto Enciso via llvm-commits]

CarlosAlbertoEnciso wrote:

This was the starting documentation I used for the `llvm-debuginfo-analyzer` `CodeView` support.

A presentation done by `Reid Kleckner`
https://llvm.org/devmtg/2016-11/Slides/Kleckner-CodeViewInLLVM.pdf
@rnk 

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