This is yet another case clang-modernize failed to add "override".

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@205644 91177308-0d34-0410-b5e6-96231b3b80d8
[X86-64] Add missing relocation.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@205645 91177308-0d34-0410-b5e6-96231b3b80d8