Fix random typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179663 91177308-0d34-0410-b5e6-96231b3b80d8
PR15149/r174304 improvement - print hex for unknown dwarf language codes & add a test case

CR feedback from Rafael Espindola and Paul Robinson.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179664 91177308-0d34-0410-b5e6-96231b3b80d8