The ornamental design for a golfclubhead, as shown and described.
FIG. 1 is a bottom, heel-side, rear perspective view of the golf club head;
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; and,
FIG. 5 is a bottom plan view thereof.
The dot-dash chain lines depict boundaries of the claimed subject matter, and thus form no part of the claimed design. The broken lines depict unclaimed parts of the golf club head, and thus form no part of the claimed design.