Lighting Fixture

FIG. 1 is a front left perspective view from below of a lighting fixture according to the new design; FIG. 2 is a front right perspective view from above thereof; FIG. 3 is a front side elevational view thereof; FIG. 4 is a left side elevational view thereof; FIG. 5 is a right side elevational view thereof; FIG. 6 is a rear side elevational view thereof; FIG. 7 is a top plan view thereof; and, FIG. 8 is a bottom plan view thereof. The broken lines in the drawings illustrate portions of the lighting fixture that form no part of the claimed design. The long dash-short dash lines in the drawings represent a boundary of the claimed design and form no part of the claimed design. The attached Appendix includes additional information relating to the claimed design, including drawings and description of suitable examples of the lighting fixture of the design. The attached Appendix is incorporated in its entirety herein by reference thereto.