签名错误判断优化

Author: carsonxu

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cos-nodejs-sdk-v5",
-  "version": "2.9.11",
+  "version": "2.9.12",
   "description": "cos nodejs sdk v5",
   "main": "index.js",
   "types": "types",

sdk/base.js

@@ -3197,7 +3197,7 @@ function getAuthorizationAsync(params, callback) {
     var cb = function (err, AuthData) {
         if (cbDone) return;
         cbDone = true;
-        if (AuthData.XCosSecurityToken && !AuthData.SecurityToken) {
+        if (AuthData && AuthData.XCosSecurityToken && !AuthData.SecurityToken) {
             AuthData = util.clone(AuthData);
             AuthData.SecurityToken = AuthData.XCosSecurityToken;
             delete AuthData.XCosSecurityToken;