The ornamental design for a swaddlinggarment for an infant, as shown and described.
FIG. 1 is a front elevation view of a swaddling garment of the present invention with a curtain disposed in a chest region of an anterior covering and an elongated opening disposed adiacent a pelvic crotch region of the anterior covering;
FIG. 2 is a rear elevation view of the swaddling garment of FIG. 1, with an elongated opening disposed adiacent a pelvic crotch region of a posterior covering;
FIG. 3 is a right elevation view of the swaddling garment in FIG. 2;
FIG. 4 is a left elevation view of the swaddling garment thereof;
FIG. 5 is a top plan view of the swaddling garment thereof;
FIG. 6 is a bottom plan view of the swaddling garment thereof; and,
FIG. 7 is a second front elevation view of the swaddling garment thereof, with the curtain withdrawn to expose an elongated opening disposed in the chest region of the anterior covering.
The dot-dashed broken lines depict portions of the swaddling garment that form no part of the claimed design.