I claim the ornamental design for a lighting fixture, as shown and described.
FIG. 1 is a perspective view of a lighting fixture. This fixture has three-way, one hundred twenty degree overall rotational symmetry and the shades have a circular horizontal cross section.
FIG. 2 is a perspective view of a lighting fixture. This fixture has five-way, seventy-two degree overall rotational symmetry and the shades have a circular horizontal cross section; and,
FIG. 3 is a perspective view of a lighting fixture. This fixture has three-way, one hundred twenty degree overall rotational symmetry. The six lower arms have six-way, sixty degree overall rotational symmetry. The shades have a circular horizontal cross section.
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.