FIG. 1 is a front, top and right side perspective view of a computer generated icon for a display screen showing our new design, the broken line drawing of a display screen is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a front view, the icon is shown separately for clarity of illustration, on an enlarged scale;

FIG. 3 is a front view of a second embodiment thereof, the icon is shown separately for clarity of illustration, on an enlarged scale; and,

FIG. 4 is a front view of a third embodiment thereof, on an enlarged scale.