Fixed shielded wall being available on Serpulo

core/src/mindustry/world/blocks/defense/ShieldWall.java

@@ -87,6 +87,11 @@ public class ShieldWall extends Wall{
             return breakTimer > 0 || !canConsume();
         }
 
+        @Override
+        public void pickedUp(){
+            shieldRadius = 0f;
+        }
+
         @Override
         public void damage(float damage){
             float shieldTaken = broken() ? 0f : Math.min(shield, damage);