[DWARF] Fix a parsing issue with type unit headers.

Reviewers: dblaikie

Differential Revision: https://reviews.llvm.org/D32987


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302574 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed