fix JSON validation

static/js/shop.jsx

@@ -183,10 +183,6 @@ class Layout extends React.PureComponent {
   checkValidation(conf) {
     let conf_obj;
 
-    if (!conf) {
-      conf = this.state.customconf;
-    }
-
     try {
       conf_obj = JSON.parse(conf);
     } catch (e) {
@@ -281,7 +277,7 @@ class Layout extends React.PureComponent {
   }
 
   handleClickLoad() {
-    this.checkValidation();
+    this.checkValidation(this.state.customconf);
 
     if (this.props.onClickLoadCustomConf) {
       this.props.onClickLoadCustomConf(this.state.customconf_ready);

static/js/shop.min.js

@@ -227,10 +227,6 @@ var Layout = /*#__PURE__*/function (_React$PureComponent) {
     value: function checkValidation(conf) {
       var conf_obj;
 
-      if (!conf) {
-        conf = this.state.customconf;
-      }
-
       try {
         conf_obj = JSON.parse(conf);
       } catch (e) {
@@ -315,7 +311,7 @@ var Layout = /*#__PURE__*/function (_React$PureComponent) {
   }, {
     key: "handleClickLoad",
     value: function handleClickLoad() {
-      this.checkValidation();
+      this.checkValidation(this.state.customconf);
 
       if (this.props.onClickLoadCustomConf) {
         this.props.onClickLoadCustomConf(this.state.customconf_ready);