Refactored CreatePost to not use context (#3813)

api/command.go

@@ -247,7 +247,8 @@ func handleResponse(c *Context, w http.ResponseWriter, response *model.CommandRe
 
 	if response.ResponseType == model.COMMAND_RESPONSE_TYPE_IN_CHANNEL {
 		post.Message = response.Text
-		if _, err := CreatePost(c, post, true); err != nil {
+		post.UserId = c.Session.UserId
+		if _, err := CreatePost(c.TeamId, post, true); err != nil {
 			c.Err = model.NewLocAppError("command", "api.command.execute_command.save.app_error", nil, "")
 		}
 	} else if response.ResponseType == model.COMMAND_RESPONSE_TYPE_EPHEMERAL && response.Text != "" {