Add a new dead_body sprite for things that are dead but you can't loot them.

assets/devices.json

@@ -85,7 +85,7 @@
         "foreground": "devices/fg:grave_stone",
         "background": "devices/bg:grave_stone"
       },
-      {"_type": "Sprite", "name": "dubious_combination", "width": 256, "height": 256, "scale": 1.0}
+      {"_type": "Sprite", "name": "dead_body", "width": 256, "height": 256, "scale": 1.0}
     ]
   }
 }