Method CoroLockGuard

IntelPresentMon/CommonUtilities/pipe/CoroMutex.cpp:46–48

	CoroLockGuard::CoroLockGuard(CoroLockGuard&& other)
		: pMtx_{ std::exchange(other.pMtx_, nullptr) }
	{}
	CoroLockGuard& CoroLockGuard::operator=(CoroLockGuard&& rhs)
	{
		pMtx_ = std::exchange(rhs.pMtx_, nullptr);