The hanger appears to be slightly bent. The hanger usually can withstand more than what the picture is showing. Park , Campi and other parts manfacturers make a tool that will bend the hanger back. The hanger is made from a softer material that is designed to bend and preserve the rear derailleur and the frame. Take it to your LBS and have a qualifued mechanic fix the problem. The bent hanger will effect shifting and possibly cause the derailleur to go into the spokes. Not fun. It is a job that will take just a few minutes but is necessary. While at the store you may want to ask them to order a replacement hanger. Usual cost is around $15.