The ornamental design for a garment, as shown and described.
FIG. 1 is a left perspective view of a garment according to my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines showing portions of the human figure illustrate environmental subject matter and form no part of the claimed design. The broken lines showing elements of the garment in the drawings represent portions of the garment that form no part of the claimed design.