The ornamental design for a light-emitting diode, as shown and described.
FIG. 1 is a top perspective view of a light-emitting diode showing our new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front view thereof, the rear view being a mirror image of the front view;
FIG. 4 is a left side view thereof, the right side view being a mirror image of the left side view;
FIG. 5 is an enlarged left side view thereof, the enlarged right side view being a mirror image of the enlarged left side view;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is an enlarged cross-sectional view taken along line 8-8 in FIG. 3 with the internal structure omitted;
FIG. 9 is an enlarged view of the portion defined by line 9-9 in FIG. 6; and,
FIG. 10 is an enlarged view of the portion defined by line 10-10 in FIG. 6.
The broken lines show unclaimed portions of the claimed design, and form no part of the claimed design. The dotted lines show environmental structures and form no part of the claimed design.