The ornamental design for a golfclubhead, as shown and described.
FIG. 1 is a front-side toe perspective view embodying the inventive design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a heel-side elevational view thereof;
FIG. 4 is a toe-side elevational view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a bottom toe perspective view thereof; and,
FIG. 7 is a rear elevantional view thereof.
The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design, while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.