[llvm] [llvm-debuginfo-analyzer] Fix crash with WebAssembly dead code (PR #141616)

[Carlos Alberto Enciso via llvm-commits]

CarlosAlbertoEnciso wrote:

@dwblaikie, @Mrmaxmeier Thanks for your valuable feedback.
Is there any additional points about the current patch that you would like to address?

Thanks

https://github.com/llvm/llvm-project/pull/141616