The ornamental design for a clotheshanger, as shown and described.
1. Clothes hanger
1.1 : Front
1.2 : Perspective
1.3 : Back
1.4 : Top
1.5 : Bottom
1.6 : Left
1.7 : Left
1.8 : Front
1.9 : Perspective
1.10 : Back
1.11 : Top
1.12 : Bottom
View 1.6 is slightly enlarged; the right side view of view 1.6 is a mirror image thereof; views 1.7-1.12 show the hanger in a second position, having the arms in a downward position; the right side view of view 1.7 is a mirror image thereof; views 1.7-1.10 are slightly enlarged; views 1.11 and 1.12 are enlarged views; the broken lines showing a hook in views 1.1-1.3 and 1.8-1.10 are excluded from protection.