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 right view thereof;
FIG. 5 is a left 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, and the broken lines showing elements of the garment in the drawings represent unclaimed portions of the garment and form no part of the claimed design.