Merge pull request #1541 from wdfaESfaef/moving-block

修复客机在游戏内使用活塞推动方块时掉线的问题

src/main/java/dev/dubhe/anvilcraft/mixin/piston/PistonMovingBlockEntityMixin.java

@@ -32,6 +32,7 @@ abstract class PistonMovingBlockEntityMixin implements PistonMovingBlockEntityIn
 
     @Override
     public void anvilcraft$setData(CompoundTag nbt) {
+        if(nbt == null) return;
         this.anvilcraft$nbt.merge(nbt);
     }