message: Remove redundant `.get()`
diff: @@ -1044,7 +1044,7 @@ class SubcolumnsTreeAlignmentTest : public MatrixTreeAlignmentTestFixture {
  while (true) {
  UnwrappedLine uwline(0, token_iter);
  SymbolPtr item = ParseItem(&token_iter, pre_format_tokens_.end());
  - if (!item.get()) {
  + if (!item) {
  break;
  }
  uwline.SpanUpToToken(token_iter);
  @@ -1060,7 +1060,7 @@ class SubcolumnsTreeAlignmentTest : public MatrixTreeAlignmentTestFixture {
  const std::vector<verible::PreFormatToken>::iterator& end) {
  SymbolPtr list = TNode(0);
  SymbolPtr item;
  - while ((item = ParseItem(it, end)).get() != nullptr) {
  + while ((item = ParseItem(it, end)) != nullptr) {
  SymbolCastToNode(*list).AppendChild(std::move(item));
  }
  return list;
  