The ornamental design for a lightfixture, as shown and described.
FIG. 1 is a perspective front elevational view of our light fixture design, which has an upright tube that is rotatable about its axis in the illustrated base;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a side elevational view thereof;
FIG. 5 is an opposite side elevational view thereof;