Ghost command, some other stuff

Content.Client/Observer/GhostComponent.cs

@@ -69,8 +69,7 @@ namespace Content.Client.Observer
             if (!(curState is GhostComponentState state)) return;
 
             _canReturnToBody = state.CanReturnToBody;
-            if (_gui == null) return;
-            _gui.ReturnToBody.Disabled = !_canReturnToBody;
+            _gui?.Update();
         }
     }
 }

Content.Client/UserInterface/GhostGui.cs

@@ -1,3 +1,4 @@
+using System.Data;
 using Content.Client.Observer;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
@@ -21,6 +22,13 @@ namespace Content.Client.UserInterface
             ReturnToBody.OnPressed += (args) => { owner.SendReturnToBodyMessage(); };
 
             AddChild(ReturnToBody);
+
+            Update();
+        }
+
+        public void Update()
+        {
+            ReturnToBody.Disabled = !_owner.CanReturnToBody;
         }
     }
 }