The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a perspective view of the design of the present disclosure;
FIG. 2 is a front side view of the design depicted in FIG. 1;
FIG. 3 is a rear side view of the design depicted in FIG. 1;
FIG. 4 is a left side view of the design depicted in FIG. 1;
FIG. 5 is a right side view of the design depicted in FIG. 1;
FIG. 6 is a top view of the design depicted in FIG. 1; and,
FIG. 7 is a bottom view of the design depicted in FIG. 1.
Those portions of the present invention which are presented in phantom illustrate the environment of the design only and form no part of the claimed design. Moreover, the shading presented in the accompanying drawings is provided merely to highlight the contour of the invention and is not intended to be illustrative of texture or gloss.