The ornamental design for the lighting fixture, as shown and described.
FIG. 1 is a perspective view of a lighting fixture showing the new design. This fixture has five-way, seventy-two-degree rotational symmetry. The hanging support bar, the vertical stems, the candles, and the shades each have a circular horizontal cross-section and three-hundred-and-sixty degree overall rotational symmetry. Each of the five vertical lighting elements also has three-way, one-hundred-and-twenty-degree rotational symmetry.
FIG. 2 is a bottom plan view of the lighting fixture of FIG. 1; and,
FIG. 3 is a fragmentary side elevation view showing a portion of the hanging support bar, one arm and one vertical lighting element.
The dashed lines on the drawings depict portions of the lighting fixture that form no part of the claimed design. The dot-dash lines in FIG. 3 represent the location on the fixture where the fragmentary view is cut. The internal structure of the central hanging support bar as shown as a section view in FIG. 3 forms no part of the claimed design.