Try to reduce cognitive complexity of code

bridge/telegram/handlers.go

@@ -490,11 +490,7 @@ func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64, parentID
 		}
 	}
 
-	if len(media) > 0 {
-		return b.sendMediaFiles(msg, chatid, parentID, media)
-	}
-
-	return "", nil
+	return b.sendMediaFiles(msg, chatid, parentID, media)
 }
 
 func (b *Btelegram) handleQuote(message, quoteNick, quoteMessage string) string {

bridge/telegram/telegram.go

@@ -172,6 +172,9 @@ func (b *Btelegram) sendMessage(chatid int64, username, text string, parentID in
 
 // sendMediaFiles native upload media files via media group
 func (b *Btelegram) sendMediaFiles(msg *config.Message, chatid int64, parentID int, media []interface{}) (string, error) {
+	if len(media) == 0 {
+		return "", nil
+	}
 	mg := tgbotapi.MediaGroupConfig{ChatID: chatid, ChannelUsername: msg.Username, Media: media, ReplyToMessageID: parentID}
 	messages, err := b.c.SendMediaGroup(mg)
 	if err != nil {