We claim the ornamental design for a handshower, as shown and described.
FIG. 1 is a perspective view of the claimed design;
FIG. 2 is a top view of the claimed design shown in FIG. 1;
FIG. 3 is a bottom view of the claimed design shown in FIG. 1;
FIG. 4 is a side view of the claimed design shown in FIG. 1;
FIG. 5 is another side view of the claimed design shown in FIG. 1;
FIG. 6 is a front view of the claimed design shown in FIG. 1; and,
FIG. 7 is a rear view of the claimed design shown in FIG. 1.
The even-dashed broken line showing of a handshower is include for the purpose of illustrating portions of the article and forms no part of the claimed design. The dash-dot broken line(s) define the bounds of the claimed design and form no part thereof.