reviseTree，兼容没有加载变更单价的情况，保证变更令使用

app/public/js/path_tree.js

@@ -1225,6 +1225,7 @@ const createNewPathTree = function (type, setting) {
             });
         }
         checkRevisePrice(d) {
+            if (!this.price || this.price.length === 0) return false;
             const setting = this.setting;
             const pid = this.getAllParents(d).map(x => { return x[setting.id] + ''; });
             const checkRela = function(rela_lid) {