fix bug fix bug https://github.com/AriaLyy/Aria/issues/595

修复一个数据升级导致的taskType列不存在问题，https://github.com/AriaLyy/Aria/issues/586

FtpComponent/src/main/java/com/arialyy/aria/ftp/download/FtpDGLoader.java

@@ -80,7 +80,8 @@ final class FtpDGLoader extends AbsGroupLoader {
       }
 
       @Override public void onFail(AbsEntity entity, BaseException e, boolean needRetry) {
-        getListener().onFail(needRetry, e);
+        //getListener().onFail(needRetry, e);
+        fail(e, needRetry);
       }
     });
   }