The ornamental design for a hanger, as shown and described.
FIG. 1 is a top perspective view of a an ornamental design for a hanger;
FIG. 2 is an elevational view of a first side of the hanger of FIG. 1, wherein a second, opposite side of the hanger is a mirror image of the first side of the hanger;
FIG. 3 is a front elevational view of the hanger of FIG. 1;
FIG. 4 is a top plan view of the hanger of FIG. 1; and,
FIG. 5 is a bottom elevational view of the hanger of FIG. 1.
The broken lines in the drawings illustrate portions of the hanger which form no part of the claimed design.