adding a return to fix compilation error from buildbot, build #75

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@176167 91177308-0d34-0410-b5e6-96231b3b80d8
fixing build error properly according to comment from David

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@176169 91177308-0d34-0410-b5e6-96231b3b80d8