rajouté un break qui manquait.

SQCSim2021/engine.cpp

@@ -370,6 +370,7 @@ void Engine::KeyReleaseEvent(unsigned char key) {
 	case 38: // Left Shift
 		//std::cout << "rLS " << std::endl;
 		m_keylshift = false;
+		break;
 	case 57: // Espace
 		//std::cout << "rSpace " << std::endl;
 		m_keySpace = false;