The ornamental design for a garment, as shown and described.
FIG. 1 is a front view of a garment showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof; and,
FIG. 4 is another front view thereof.
The even broken lines showing portions of the garment, illustrate the portions of the design that form no part of the claim. The other broken lines represent the buttons and the rectangular in FIGS. 1 and 4 that form no part of the claimed design. None of the broken lines form any part of the claimed design.