Merge pull request #897 from kkfive/patch-1

perf: 优化twikoo评论，无评论数容器时不调用API获取

layout/includes/third-party/comments/twikoo.pug

@@ -15,13 +15,15 @@ script.
     }
 
     const getCount = () => {
+      const countELement = document.getElementById('twikoo-count')
+      if(!countELement) return
       twikoo.getCommentsCount({
         envId: '!{envId}',
         region: '!{region}',
         urls: [window.location.pathname],
         includeReply: false
       }).then(function (res) {
-        document.getElementById('twikoo-count').innerText = res[0].count
+        countELement.innerText = res[0].count
       }).catch(function (err) {
         console.error(err);
       });
@@ -48,4 +50,4 @@ script.
         loadTwikoo()
       }
     }
-  })()
+  })()