Spoiler for a vehicle

FIG. 1 is a top view of a spoiler for a vehicle according to the design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a left side view thereof, the right side view being mirror symmetrical;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrate portions of the article that form no part of the claimed design.