The ornamental design for a golfbelt, as shown and described.
FIG. 1 is a front perspective view of a golf belt showing my new design, the undisclosed rear is not part of the claimed design;
FIG. 2 is a front perspective view of a second embodiment of a golf belt showing my new design, the undisclosed rear is not part of the claimed design;
FIG. 3 is a front perspective view of a third embodiment of a golf belt showing my new design; the undisclosed rear is not part of the claimed design; and,
FIG. 4 is a front perspective view of a fourth embodiment of a golf belt showing my new design, the undisclosed rear is not part of the claimed design.