The ornamental design for a pothanger, as shown and described.
FIG. 1 is a perspective view of the pot hanger;
FIG. 2 is a front view of the pot hanger of FIG. 1;
FIG. 3 is a back view of the pot hanger of FIG. 1;
FIG. 4 is a left side view of the pot hanger of FIG. 1;
FIG. 5 is a right side view of the pot hanger of FIG. 1;
FIG. 6 is a top view of the pot hanger of FIG. 1;
FIG. 7 is a bottom view of the pot hanger of FIG. 1; and,
FIG. 8 is an environmental view of the pot hanger.
Broken lines depict portions of the pot hanger that form no part of the claimed design. The broken away symbols in the drawings indicate the appearance of any portion of the article between the broken away symbols forms no part of the claimed design.