The ornamental design for a wind fairing, as shown and described.
FIG. 1 is a perspective view of the wind fairing showing my design;
FIG. 2 is a side elevation view thereof; and,
FIG. 3 is a front elevation view thereof.
The broken line showing a truck tractor in FIG. 1 is for illustrative
purposes only in showing the relationship between fairing and a truck
tractor, and forms no part of the claimed design.