The ornamental design for a lightingfixture, as shown and described.
FIG. 1 is a perspective view of a lighting fixture having mirror image symmetry (one hundred eighty degree overall rotational symmetry, and mirror image symmetry along a first vertical imaginary plane and also mirror image symmetry along a second vertical imaginary plane, with the first and second vertical imaginary planes being orthogonal to each other). The shades and upper stems each have a circular horizontal cross section; and,
FIG. 2 is a perspective view of a lighting fixture having mirror image symmetry (one hundred eighty degree overall rotational symmetry, and mirror image symmetry along a first vertical imaginary plane and also mirror image symmetry along a second vertical imaginary plane, with the first and second vertical imaginary planes being orthogonal to each other). The shades and upper stems each have a circular horizontal cross section.
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.