I claim the ornamental design for a lighting fixture, as shown and described.
FIG. 1 is a perspective view of a first embodiment of the new design, which has four-way ninety-degree overall rotational symmetry;
FIG. 2 is a perspective view of a second embodiment of the new design, which has six-way sixty-degree overall rotational symmetry;
FIG. 3 is a perspective view of a third embodiment of the new design, which has three-way, one hundred and twenty-degree overall rotational symmetry, and the six lower arms and corresponding uprights have six-way, sixty-degree overall rotational symmetry; and,
FIG. 4 is a perspective view of a fourth embodiment of the new design, which has three-way, one hundred and twenty-degree overall rotational symmetry, and the six lower arms and corresponding uprights have six-way, sixty-degree overall rotational symmetry.
The broken lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.