The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a bottom, front, right perspective view of a lighting fixture showing our new design, wherein the bottom, rear, left perspective view is identical thereto;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a front view thereof;
FIG. 7 is a rear view thereof; and,
FIG. 8 is a top, front, right perspective view thereof.
The uneven-length broken lines represent unclaimed boundaries of the claimed design. The unshaded surface designated by the arrow and letter “A” in FIG. 3 forms no part of the claimed design except that the edges of the surface represent claimed boundaries of the design. The even-length broken lines showing the remainder of the lighting fixture are for illustrative purposes only and form no part of the claimed design. The arrow and letter “A” in FIG. 3 forms no part of the claimed design.