The ornamental design for a golfclubhead, as shown and described.
FIG. 1 is a perspective back view of my new design for a golf club head;
FIG. 2 is a back view thereof;
FIG. 3 is a bottom sole view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a heel view thereof; and,
FIG. 7 is a toe view thereof.
The broken line shown on the golf club head and hosel are included for the purpose of illustrating unclaimed subject matter and forms no part of the claimed design. The dash-dot lines are included as boundary lines and form no part of the claimed design.