Lighting Fixture

FIG. 1 is a top, front left perspective view of the lighting fixture showing my design; FIG. 2 is a left view thereof; FIG. 3 is a right view thereof; FIG. 4 is a front view thereof; FIG. 5 is a rear view thereof; FIG. 6 is a bottom plan view thereof; and, FIG. 7 is a top plan view thereof. The broken lines shown in the drawings represent portions of the lighting fixture that form no part of the claimed design.