QxtSerialDevice: destroy QSocketNotifier when device is closed
QxtSerialDevice: destroy QSocketNotifier when device is closed

hrobeers/qxtweb-qt5,mmitkevich/libqxt,mmitkevich/libqxt,hrobeers/qxtweb-qt5,hrobeers/qxtweb-qt5,mmitkevich/libqxt,mmitkevich/libqxt,hrobeers/qxtweb-qt5,hrobeers/qxtweb-qt5