The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a bottom perspective view of a lighting fixture showing our new design;
FIG. 2 is an enlarged bottom perspective view thereof;
FIG. 3 is a top perspective view thereof in a reduced scale;
FIG. 4 is a top perspective view thereof;
FIG. 5 is an enlarged end elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a right side elevational view thereof;
FIG. 8 is a top plan view thereof;
FIG. 9 is a bottom plan view thereof;
FIG. 10 is an enlarged fragmentary right side elevational view thereof; and,
FIG. 11 is an enlarged fragmentary bottom plan view thereof.
The broken line lines are directed to environment and are for illustrative purposes only. The broken lines form no part of the claimed design. In its environment, the claimed lighting fixture may be suspended from an overhead structure and used singularly or as multiple connected units.