The ornamental design for a potlid, as shown and described.
FIG. 1 depicts a top perspective view of a pot lid of the present disclosure;
FIG. 2 depicts a bottom perspective view of apportion of the pot lid of FIG. 1;
FIG. 3 depicts a top view of the pot lid of FIG. 1;
FIG. 4 depicts a bottom view of the pot lid of FIG. 1;
FIG. 5 depicts a front side view of the pot lid of FIG. 1; and,
FIG. 6 depicts a left side view of the pot lid of FIG. 1.
The rear view of the pot lid is an identical image of the front view, and the right side view of the pot lid is an identical image of the left side view. The broken lines in the drawings depict portions of the pot lid that form no part of the claimed design.