The ornamental design for a portablelight, as shown and described.
FIG. 1 is a front, inverted view of a portable light of the present application; those elements shown in broken line are for purpose of illustrating environment only and form no part of the claimed design;
FIG. 2 is a perspective view of the portable light;
FIG. 3 is a rear view of the portable light;
FIG. 4 is a right side view of the portable light;
FIG. 5 is a left side view of the portable light;
FIG. 6 is a top view of the portable light; and,
FIG. 7 is a bottom view of the portable light.
In the drawings, the broken lines are for the purpose of illustrating environment only and form no part of the claimed design.