[llvm] [CLANG][DWARF] Handle DIE offset collision in DW_IDX_parent (PR #95339)

[Felipe de Azevedo Piovezan via llvm-commits]

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

So the asan fix was replacing `CU->getOutUnitDIE()->getTag() == dwarf::DW_TAG_type_unit` with `CU->getTag() == dwarf::DW_TAG_type_unit)`?

Also noticed you deleted the default ctor here (which is good). Just to double check, this particular bit is unrelated to the asan issue right?

https://github.com/llvm/llvm-project/pull/95339