Method swap

source/threads/async_lock.cpp:216–219

}

void scoped_async_lock::swap(scoped_async_lock& rhs) noexcept {
    std::swap(m_lock, rhs.m_lock);
    std::swap(m_owns, rhs.m_owns);
}

async_lock* scoped_async_lock::release() noexcept {
    m_owns = false;