The ornamental design for a wallsocketextender, as shown and described.
FIG. 1 is a front perspective view of a wall socket extender;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right-side elevation view thereof;
FIG. 5 is a left-side elevation view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is another perspective view thereof, shown in an extension state and with one socket portion in a rotated state.
The dashed broken lines in the drawings are for the purpose of illustrating portions of the article that form no part of the claimed design.
The wall socket extender is shown with symbolic breaks in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.