Close Deivce after app close.

src/main.cpp

@@ -76,6 +76,7 @@ int main(int argc, char* argv[])
 
 
 	QStringList app_args = a.arguments();
+    int ret = 0;
 	if (app_args.contains("-d"))
 	{
 		w.debugConsoleOn();
@@ -93,15 +94,16 @@ int main(int argc, char* argv[])
         DeviceManager::Default()->initDevice();
 		w.requestLogin();
 
-		int ret = a.exec();
+		ret = a.exec();
 		thread.terminate();
-		return ret;
+
 	}
 	else {
 		w.showFullScreen();
         DeviceManager::Default()->initDevice();
 		w.requestLogin();
-		return a.exec();
+        ret = a.exec();
 	}
-
+    DeviceManager::Default()->close();
+    return ret;
 }