message: [NFC] Simplify code
  This simplifies the code and updates the comments.
diff: @@ -751,34 +751,30 @@ bool ValueObjectPrinter::PrintChildrenOneLiner(bool hide_names) {
  void ValueObjectPrinter::PrintChildrenIfNeeded(bool value_printed,
  bool summary_printed) {
  - // this flag controls whether we tried to display a description for this
  - // object and failed if that happens, we want to display the children, if any
  + // This flag controls whether we tried to display a description for this
  + // object and failed if that happens, we want to display the children if any.
  bool is_failed_description =
  !PrintObjectDescriptionIfNeeded(value_printed, summary_printed);
  - auto curr_ptr_depth = m_ptr_depth;
  - bool print_children =
  + DumpValueObjectOptions::PointerDepth curr_ptr_depth = m_ptr_depth;
  + const bool print_children =
  ShouldPrintChildren(is_failed_description, curr_ptr_depth);
  - bool print_oneline =
  + const bool print_oneline =
  (curr_ptr_depth.CanAllowExpansion() || m_options.m_show_types ||
  !m_options.m_allow_oneliner_mode || m_options.m_flat_output ||
  (m_options.m_pointer_as_array) || m_options.m_show_location)
  ? false
  : DataVisualization::ShouldPrintAsOneLiner(*m_valobj);
  - bool is_instance_ptr = IsInstancePointer();
  - uint64_t instance_ptr_value = LLDB_INVALID_ADDRESS;
  -
  - if (print_children && is_instance_ptr) {
  - instance_ptr_value = m_valobj->GetValueAsUnsigned(0);
  + if (print_children && IsInstancePointer()) {
  + uint64_t instance_ptr_value = m_valobj->GetValueAsUnsigned(0);
  if (m_printed_instance_pointers->count(instance_ptr_value)) {
  - // we already printed this instance-is-pointer thing, so don't expand it
  + // We already printed this instance-is-pointer thing, so don't expand it.
  m_stream->PutCString(" {...}\n");
  -
  - // we're done here - get out fast
  return;
  - } else
  - m_printed_instance_pointers->emplace(
  - instance_ptr_value); // remember this guy for future reference
  + } else {
  + // Remember this guy for future reference.
  + m_printed_instance_pointers->emplace(instance_ptr_value);
  + }
  }
  if (print_children) {
  