message: [Breakpoint] Fix bug when adding names to lookup
  I introduced this bug in my last commit generalizing this function. I caught it
  before I committed it to llvm.org, but it went into swift-lldb before I
  committed it to llvm.org. This patch fixes it.
diff: @@ -229,7 +229,7 @@ void BreakpointResolverName::AddNameLookup(ConstString name,
  for (ConstString variant_name : variant_names) {
  Module::LookupInfo variant_lookup(name, name_type_mask,
  lang->GetLanguageType());
  - lookup.SetLookupName(variant_name);
  + variant_lookup.SetLookupName(variant_name);
  m_lookups.emplace_back(variant_lookup);
  }
  return true;
  