Cleanup

core/src/mindustry/io/TypeIO.java

@@ -185,7 +185,7 @@ public class TypeIO{
             return unit == null ? Nulls.unit : unit;
         }else if(type == 1){ //block
             Building tile = world.build(id);
-            return tile instanceof ControlBlock ? ((ControlBlock)tile).unit() : Nulls.unit;
+            return tile instanceof ControlBlock cont ? cont.unit() : Nulls.unit;
         }
         return Nulls.unit;
     }