The ornamental design for a wirelesscharger, as shown and described.
FIG. 1 is a front, right side perspective view of a wireless charger, showing our new design;
FIG. 2 is a front elevation view thereof, the rear elevation view being identical thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
Broken lines in the drawings depict portions of the wireless charger that form no part of the claimed design.
The wireless charger is shown with a symbolic break in its length. The appearance of any portion of the wireless charger between the break lines forms no part of the claimed design.