[llvm] [DebugInfo] Report errors when DWARFUnitHeader::applyIndexEntry fails (PR #89156)

[Felipe de Azevedo Piovezan via llvm-commits]

https://github.com/felipepiovezan approved this pull request.

LGTM!
I find it surprising that, looking for the word "package" in the dwarf 5 spec yields the first result in section 7, which is usually reserved for the finer points of the data representation

https://github.com/llvm/llvm-project/pull/89156