FIG. 1 is a front, left perspective view of a lighting fixture showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a top, front, left perspective view thereof; and,

FIG. 9 is a top, rear, right perspective view thereof.

The uneven-length broken lines represent unclaimed boundaries of the claimed design. The even-length broken lines showing the remainder of the lighting fixture are for environmental purposes only and form no part of the claimed design.