update undefined

@@ -117,7 +117,8 @@ $('.info-list .title, .one-good .reco-name').each(function() {
 });
 
 //offset.left约等于marginLeft的值则表示介绍被换行，则清除intro的paddingTop让其更靠近头像和作者名
-if ($authorIntro && (parseInt($authorIntro.offset().left, 10) === parseInt($authorIntro.css('margin-left'), 10))) {
+if ($authorIntro.offset() 
+    && (parseInt($authorIntro.offset().left, 10) === parseInt($authorIntro.css('margin-left'), 10))) {
     $authorIntro.css('padding-top', 0);
 }