I claim the ornamental design for a lighting fixture, as shown and described.
FIGS. 1–6 are views of a lighting fixture.
FIG. 1 is a front view of the lighting fixture.
FIG. 2 is a back view of the lighting fixture, taken slightly off-center.
FIG. 3 is a right side view of the lighting fixture, taken slightly off-center, for which the left side view of the lighting fixture would be a mirror image thereof.
FIG. 4 is a top view of the lighting fixture, taken slightly off-axis.
FIG. 5 is a bottom view of the lighting fixture, taken slightly off-axis; and,
FIG. 6 is a perspective view of the lighting fixture.
The broken lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.