message: Make Finalize tolerant of empty register sets.
diff: @@ -437,7 +437,7 @@ void DynamicRegisterInfo::Finalize(const ArchSpec &arch) {
  for (size_t set = 0; set < num_sets; ++set) {
  assert(m_sets.size() == m_set_reg_nums.size());
  m_sets[set].num_registers = m_set_reg_nums[set].size();
  - m_sets[set].registers = &m_set_reg_nums[set][0];
  + m_sets[set].registers = m_set_reg_nums[set].data();
  }
  // sort and unique all value registers and make sure each is terminated with
  