The ornamental design for a wall mounted lightfixture, as shown and described.
FIG. 1 is a perspective view of a wall mounted light fixture illustrating our design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left side view, the right side view being a mirror image thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a back plan view thereof.
The broken lines shown in FIGS. 1, 3, 4, 5 and 6 show environmental structure, are for illustrative purposes only, and form no part of the claimed design.