fixes bug where one could open an input field at a connected input pin
fixes bug where one could open an input field at a connected input pin

sebllll/vvvv.js,zauner/vvvv.js,sebllll/vvvv.js,AndBicScadMedia/vvvv.js,AndBicScadMedia/vvvv.js,AndBicScadMedia/vvvv.js,sebllll/vvvv.js,zauner/vvvv.js,zauner/vvvv.js,AndBicScadMedia/vvvv.js,sebllll/vvvv.js,AndBicScadMedia/vvvv.js,zauner/vvvv.js,zauner/vvvv.js,sebllll/vvvv.js