Display Screen Having an Icon

FIG. 1 is a front view of a display screen having an icon showing a first image in a sequence according to a first embodiment. FIG. 2 is a second image thereof. FIG. 3 is a front view of a display screen having an icon showing a first image in a sequence according to a second embodiment. FIG. 4 is a second image thereof. FIG. 5 is another view of the icon of FIG. 1 shown in an example environment. FIG. 6 is another view of the icon of FIG. 2 shown in an example environment. FIG. 7 is another view of the icon of FIG. 3 shown in an example environment. FIG. 8 is another view of the icon of FIG. 4 shown in an example environment. FIG. 9 is another view of the icon of FIG. 1 shown in another example environment. FIG. 10 is another view of the icon of FIG. 2 shown in another example environment. FIG. 11 is another view of the icon of FIG. 3 shown in another example environment; and, FIG. 12 is another view of the icon of FIG. 4 shown in another example environment. The figures illustrate an animated icon that transitions from a first frame to a second frame in each of several variants: FIGS. 1 - 2 , FIGS. 3 - 4 , FIGS. 5 - 6 , FIGS. 7 - 8 , FIGS. 9 - 10 , FIGS. 11 - 12 , respectively. The process or period in which an image transitions to another forms no part of the claimed design. The features shown in dashed or broken lines form no part of the claimed design. The outermost broken line showing the display screen in all the figures and all the broken lines shown in the drawings are included for the purposes of illustrating portions of the article that form no part of the claimed design.