More fleshing out of workorder usage

src/engine/gameManager/ForgeManager.java

@@ -83,9 +83,10 @@ public enum ForgeManager implements Runnable {
         workOrder.workOrderID = wordOrderCounter.incrementAndGet();
         workOrder.completionTime = System.currentTimeMillis() + workOrder.rollingDuration;
 
-        // 0 signifies single item roll. > 0 signifies multiple item roll.
+        // Single item rolls are total_to_produce of 0;
 
-        workOrder.total_to_produce = Math.max(1, workOrder.total_to_produce);
+        if (workOrder.slotCount > 1 && workOrder.total_to_produce == 0)
+            workOrder.slotCount = 1;
 
         workOrder.vendor.workOrders.add(workOrder);
         workOrders.add(workOrder);