修复错误：工程师可能没有任何指派订单导致查询错误

project-order/src/main/java/com/dituhui/pea/order/service/impl/OrderAssignImpl.java

@@ -64,9 +64,13 @@ public class OrderAssignImpl implements OrderAssign {
 				continue;
 			}
 
+			// 获取订单tips
+			HashMap<String, List<LabelValueDTO>> orderTips = new HashMap<>();
 			List<String> orderIds = orderAppointments.stream().map(OrderAppointment::getOrderId).collect(Collectors.toList());
-			List<OrderRequest> orders = this.queryOrderRequestsByOrderIds(orderIds);
-			HashMap<String, List<LabelValueDTO>> orderTips = this.packOrderTips(orders);
+			if(!orderIds.isEmpty()) {
+				List<OrderRequest> orders = this.queryOrderRequestsByOrderIds(orderIds);
+				orderTips = this.packOrderTips(orders);
+			}
 
 			OrderAssignRecommendResp.Engineer item = new OrderAssignRecommendResp.Engineer();