Function absl_nullable BorrowerRelease

common/memory.h:434–441

namespace common_internal {

inline const ReferenceCount* absl_nullable BorrowerRelease(
    Borrower borrower) noexcept {
  uintptr_t ptr = borrower.ptr_;
  if (Owner::IsReferenceCount(ptr)) {
    return Owner::AsReferenceCount(ptr);
  }
  return nullptr;
}

}  // namespace common_internal