fix(comment): gitment undefined error in comment/scripts.ejs

_config.yml.example

@@ -58,10 +58,10 @@ comment:
     changyan: # please fill in `appid` and `conf` to enable
         appid:
         conf:
-	gitment:
+    gitment:
         owner: #your github ID
         repo: #the repo to store comments
-		#Register an OAuth application, and you will get a client ID and a client secret.
+        #Register an OAuth application, and you will get a client ID and a client secret.
         client_id: #your client ID
         client_secret: #your client secret
 

layout/comment/scripts.ejs

@@ -10,6 +10,10 @@
     <%- partial('comment/isso', { script: true }) %>
 <% } else if (theme.comment.changyan && theme.comment.changyan.appid && theme.comment.changyan.conf) { %>
     <%- partial('comment/changyan', { script: true }) %>
-<% } else if (theme.comment.gitment.owner && theme.comment.gitment.repo && theme.comment.gitment.client_id && theme.comment.gitment.client_secret) { %>
+<% } else if (theme.comment.gitment &&
+    theme.comment.gitment.owner &&
+    theme.comment.gitment.repo &&
+    theme.comment.gitment.client_id &&
+    theme.comment.gitment.client_secret) { %>
     <%- partial('comment/gitment', { script: true }) %>
 <% } %>