fix some error

bingo.bat

@@ -1,4 +1,4 @@
-# WXAPPUNPACKER_PATH 项目路径
+::# WXAPPUNPACKER_PATH 项目路径
 set WXAPPUNPACKER_PATH=%~dp0
 
 set FILE_FORMAT=wxapkg

wuConfig.js

@@ -46,6 +46,7 @@ function doConfig(configFile, cb) {
                     root = root.substring(1);
                 }
                 let newPages = [];
+                if (subPackage.pages) {
                     for (let page of subPackage.pages) {
                         let items = page.replace(root, '');
                         newPages.push(items);
@@ -54,6 +55,8 @@ function doConfig(configFile, cb) {
                             pages.splice(subIndex, 1);
                         }
                     }
+                }
+
                 subPackage.root = root;
                 subPackage.pages = newPages;
                 subPackages.push(subPackage);