修复满减立方米等不能修改减货币单位

src/views/ecw/coupon/edit.vue

@@ -509,7 +509,7 @@ export default {
 						currencyId = this.currencyList[0].id
 					}
 					this.$set(item, 'reduceCurrencyId', currencyId)
-				}
+				}else this.$set(item, 'reduceCurrencyDisabled', false)
 				
 				return
 			}