Serialization work

src/engine/net/client/msg/ItemProductionMsg.java

@@ -17,7 +17,6 @@ import engine.net.*;
 import engine.objects.Building;
 import engine.objects.Item;
 import engine.objects.NPC;
-import org.pmw.tinylog.Logger;
 
 import java.util.HashMap;
 
@@ -129,9 +128,7 @@ public class ItemProductionMsg extends ClientNetMsg {
                     Item item;
                     item = Item.getFromCache(this.itemUUID); // If sent to rolling window adds a new slot.
 
-                    if (item == null)
+                    if (item != null)
-                        Logger.error("Null item serialized");
-                    else
                         Item.serializeForClientMsgWithoutSlot(item, writer);
 
                     writer.putInt(building.getStrongboxValue());
@@ -151,9 +148,7 @@ public class ItemProductionMsg extends ClientNetMsg {
                 else
                     item = ForgeManager.inMemoryItemLookup.get(this.itemUUID);
 
-                if (item == null)
+                if (item != null)
-                    Logger.error("Null item serialized");
-                else
                     Item.serializeForClientMsgWithoutSlot(item, writer);
 
                 writer.putInt(building.getStrongboxValue());