/// Also for updateBuffer().
/// Call this when entering things like footnotes, where there is now
/// no "last layout" and we want to restore the "last layout" on exit.
- void clearLastLayout() { layout_stack_.push_back(0); }
+ void clearLastLayout() { layout_stack_.push_back(nullptr); }
/// Call this when exiting things like footnotes.
void restoreLastLayout() { layout_stack_.pop_back(); }
///