Fix yaml metadata description not able to show

Author: jackycute

lib/response.js

@@ -209,7 +209,7 @@ function showPublishNote(req, res, next) {
             var origin = config.serverurl;
             var data = {
                 title: title,
-                description: meta.description || markdown ? models.Note.generateDescription(markdown) : null,
+                description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
                 viewcount: note.viewcount,
                 createtime: createtime,
                 updatetime: updatetime,
@@ -281,7 +281,7 @@ function actionInfo(req, res, note) {
     var title = models.Note.decodeTitle(note.title);
     var data = {
         title: meta.title || title,
-        description: meta.description || markdown ? models.Note.generateDescription(markdown) : null,
+        description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
         viewcount: note.viewcount,
         createtime: createtime,
         updatetime: updatetime
@@ -597,7 +597,7 @@ function showPublishSlide(req, res, next) {
             var origin = config.serverurl;
             var data = {
                 title: title,
-                description: meta.description || markdown ? models.Note.generateDescription(markdown) : null,
+                description: meta.description || (markdown ? models.Note.generateDescription(markdown) : null),
                 viewcount: note.viewcount,
                 createtime: createtime,
                 updatetime: updatetime,