remove remaining Global() calls (outside of tests) (#7521)

api/post.go

@@ -141,7 +141,7 @@ func saveIsPinnedPost(c *Context, w http.ResponseWriter, r *http.Request, isPinn
 			message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", rpost.ChannelId, "", nil)
 			message.Add("post", rpost.ToJson())
 
-			go app.Publish(message)
+			go c.App.Publish(message)
 
 			c.App.InvalidateCacheForChannelPosts(rpost.ChannelId)