adds fix for NPE on getting the requested stack, #556

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java

@@ -76,6 +76,7 @@ public class CraftingTask implements ICraftingTask {
         IFluidStackList networkFluidList = network.getFluidStorageCache().getList().copy();
         IItemStackList toInsert = API.instance().createItemStackList();
 
+        ItemStack requested = this.requested != null ? this.requested : pattern.getOutputs().get(0);
         toCraft.add(ItemHandlerHelper.copyStackWithSize(requested, quantity));
 
         int quantity = this.quantity;