Method resize

cpp/infogetty-cpp/network_info.cc:193–204

    }

    inline void
    resize(std::size_t n)
    {
        if (n > capacity_) {
            std::unique_ptr<char[], void(*)(void*)> tmp(
                reinterpret_cast<char*>(aligned_alloc(alignof(struct nlmsghdr), n)),
                std::free);
            std::memcpy(tmp.get(), buf_.get(), capacity_);
            capacity_ = n;
            buf_.swap(tmp);
        }
    }

    inline std::size_t capacity() const { return capacity_; }