The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a top-front perspective view of a lighting fixture showing the new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a back elevational view thereof.
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a top-back perspective view thereof.
The vertical broken lines in FIG. 4 and FIG. 5 and the horizontal broken lines in FIG. 6 and FIG. 7 represent the surface of the wall to which the lighting fixture is mounted, which surface forms no part of the claimed design. The circular broken line disclosure in FIGS. 1-8 represents the bulb of the lighting fixture, which forms no part of the claimed design. The rectangular broken line disclosure in FIG. 3 and FIG. 8 represent the rear surface of the lighting fixture, which rear surface forms no part of the claimed design.