The ornamental design for a holepunch, as shown and described.
FIG. 1 is a front perspective view of the hole punch;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a rear perspective view thereof.
The broken line showing of portions of the hole punch in FIGS. 1–7 are included for the purpose of illustrating environment and form no part of the claimed design.