The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a first front perspective view of a lighting fixture showing a first embodiment of our new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a front view thereof;
FIG. 8 is a rear perspective view thereof;
FIG. 9 is a second front perspective view thereof;
FIG. 10 is a first front perspective view of a lighting fixture showing a second embodiment of our new design;
FIG. 11 is a left side view thereof;
FIG. 12 is a right side view thereof;
FIG. 13 is a top view thereof;
FIG. 14 is a bottom view thereof;
FIG. 15 is a rear view thereof;
FIG. 16 is a front view thereof;
FIG. 17 is a rear perspective view thereof; and,
FIG. 18 is a second front perspective view thereof.
The uneven-length broken lines represent unclaimed boundaries of the claimed design and form no part of the claimed design. The even-length broken lines represent environmental structure and form no part of the claimed design.