fix: 修改多个处理函数的返回类型为指针类型，以提高内存使用效率并避免不必要的拷贝

handler/help/help.go

@@ -3,6 +3,7 @@ package help
 import (
 	"git.lxtend.com/qqbot/constants"
 	"git.lxtend.com/qqbot/handler"
+	"git.lxtend.com/qqbot/message"
 	"git.lxtend.com/qqbot/model"
 	"git.lxtend.com/qqbot/util"
 )
@@ -11,7 +12,7 @@ func init() {
 	handler.RegisterHandler("!help", help, constants.LEVEL_BANNED)
 }
 
-func help(msg model.Message) (reply model.Reply) {
+func help(msg model.Message) *model.Reply {
 	var helpInfo string
 	if len(util.SplitN(msg.RawMsg, 2)) == 1 {
 		helpInfo = `请输入!help [分类] 查看下面的分类功能`
@@ -27,7 +28,17 @@ func help(msg model.Message) (reply model.Reply) {
 			helpInfo += "\n" + v.Trigger + " : " + v.Inform
 		}
 	}
-	return model.Reply{
+	textMsg := message.NewTextMessage()
+	textMsg.Data.Text = helpInfo
+	nodeMsg := message.NewNodeMessage()
+	nodeMsg.Data.ID = "10086"
+	nodeMsg.Data.UserID = "123456789"
+	nodeMsg.Data.Nickname = "test"
+	nodeMsg.Data.Content = []interface{}{textMsg}
+	forwardMsg := message.NewForwardMessage()
+	forwardMsg.Data.ID = "10086"
+	forwardMsg.Data.Content = []interface{}{nodeMsg}
+	return &model.Reply{
 		ReplyMsg:       helpInfo,
 		ReferOriginMsg: false,
 		FromMsg:        msg,