The ornamental design for a headlight for a vehicle, as shown and described.
FIG. 1 is an isometric view of a headlight for a vehicle according to the design;
FIG. 2 is a front view thereof;
FIG. 3 is a top view thereof; and,
FIG. 4 is a left side view thereof.
The broken lines illustrate portions of the headlight for a vehicle in which the design is embodied and form no part of the claimed design.
The figures provide various views of the inventive headlight illustrated as a passenger's side headlight. It should be understood that driver's side views of the inventive headlight are mirror images of the various views of the passenger's side headlight. Thus, although driver's side views of the inventive headlight are not provided, both passenger's side and driver's side headlights are within the scope of the present invention.