I claim the ornamental design for a garment hanger, as shown and described.
FIG. 1 is a perspective view of a garment hanger according to the new design.
FIG. 2 is a front view of the garment hanger of FIG. 1.
FIG. 3 is a top view of the garment hanger of FIG. 1.
FIG. 4 is a right-side view of the garment hanger of FIG. 1.
FIG. 5 is a rear view of the garment hanger of FIG. 1.
FIG. 6 is a bottom view of the garment hanger of FIG. 1; and,
FIG. 7 is a left-side view of the garment hanger of FIG. 1.
The broken lines in the figures illustrate portions of the garment hanger that form no part of the claimed design. The claimed design is not limited to the gray color shown in the drawings.