Core: Made Mutex and ConditionVariable moveable

Former-commit-id: 891fbb35d050f3df572cbbecd0191b75f556e59d

src/Nazara/Core/ConditionVariable.cpp

@@ -101,4 +101,18 @@ namespace Nz
 		NazaraAssert(mutex != nullptr, "Mutex must be valid");
 		return m_impl->Wait(mutex->m_impl, timeout);
 	}
+
+	/*!
+	* \brief Moves a condition to another ConditionVariable object
+	* \return A reference to the object
+	*/
+	ConditionVariable& ConditionVariable::operator=(ConditionVariable&& condition) noexcept
+	{
+		delete m_impl;
+
+		m_impl = condition.m_impl;
+		condition.m_impl = nullptr;
+
+		return *this;
+	}
 }