The ornamental design for a nightlight, as shown and described.
FIG. 1 is a perspective view from the front of the night light of the invention.
FIG. 2 is a perspective view from the rear of the night light shown in FIG. 1.
FIG. 3 is a front elevational view of the night light shown in FIG. 1.
FIG. 4 is a right side elevational view of the night light shown in FIG. 1. The left side of the night light is a mirror image of the view of the night light shown in FIG. 4.
FIG. 5 is a rear elevational view of the night light shown in FIG. 1.
FIG. 6 is a plan view from the top of the night light shown in FIG. 1; and,
FIG. 7 is a plan view from the bottom of the night light shown in FIG. 1.