fix: 发货审核异常未回滚导致的脏数据，添加判空操作

gongchunyi

昨天 2aa97d1237b7f720b33f9952f9901ddf7ae9833a

 src/main/java/com/ruoyi/sales/dto/InvoiceRegistrationDto.java

@@ -23,4 +23,7 @@
    @ApiModelProperty(name = "合同金额")
    private BigDecimal contractAmount;

    @ApiModelProperty(name = "未开票金额")
    private BigDecimal noInvoiceAmountTotal;

}