Convert an ErrorOr to Expected.

getRelocationAddend should never be called on non SHT_RELA sections,
but changing that requires changing RelocVisitor.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315473 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed