[BugFix]修复授权码页面报错

core/src/main/java/com/yizhuan/xchat_android_core/auth/AuthModel.java

@@ -1038,7 +1038,7 @@ public class AuthModel extends BaseModel implements IAuthModel {
      */
     public Single<String> boundAuthCode(String authCode) {
         return api.boundAuthCode(authCode)
-                .compose(RxHelper.handleBeanData())
+                .compose(RxHelper.handleStringData())
                 .compose(RxHelper.handleSchedulers());
     }