优化条码查询接口

src/pages/CounterMixins.js

@@ -634,6 +634,7 @@ const CounterMixins = ComposeComponent => {
         }
         this.setDelay();
         let {goodsArr} = this.state;
+        this.barcode = '';
         let {data} = goods
           ? {data: {code: 1, data: goods}}
           : await this.props.dispatch({
@@ -644,7 +645,6 @@ const CounterMixins = ComposeComponent => {
           return;
         }
         if (data.code < 0) {
-          this.barcode = '';
           this.speak(data.msg);
           return;
         }