fix: 优化 urlparser 中的错误处理逻辑，移除无效的回复信息返回，确保函数在遇到错误时返回 nil

handler/urlparser/url.go

@@ -30,19 +30,11 @@ func plainTextUrlParser(msg model.Message) (reply *model.Reply) {
 	url, _ = removeTrackingParams(url)
 	newUrl, err := resolveFinalURL(url)
 	if err != nil {
-		return &model.Reply{
+		return nil
-			ReplyMsg:       "",
-			ReferOriginMsg: false,
-			FromMsg:        msg,
-		}
 	}
 	newUrl, _ = removeTrackingParams(newUrl)
 	if util.IsEquivalentURL(url, newUrl) {
-		return &model.Reply{
+		return nil
-			ReplyMsg:       "",
-			ReferOriginMsg: false,
-			FromMsg:        msg,
-		}
 	}
 	return &model.Reply{
 		ReplyMsg:       newUrl,
@@ -55,11 +47,7 @@ func cqJsonUrlParser(msg model.Message) (reply *model.Reply) {
 	newMsg := strings.ReplaceAll(msg.RawMsg, "\n", "")
 	qqdocurl, err := extractQQDocURL(newMsg)
 	if err != nil {
-		return &model.Reply{
+		return nil
-			ReplyMsg:       "",
-			ReferOriginMsg: true,
-			FromMsg:        msg,
-		}
 	}
 
 	return &model.Reply{