refactor: token counter logic

relay/audio_handler.go

@@ -66,7 +66,7 @@ func AudioHelper(c *gin.Context) (openaiErr *dto.OpenAIErrorWithStatusCode) {
 	promptTokens := 0
 	preConsumedTokens := common.PreConsumedQuota
 	if relayInfo.RelayMode == relayconstant.RelayModeAudioSpeech {
-		promptTokens, err = service.CountTTSToken(audioRequest.Input, audioRequest.Model)
+		promptTokens = service.CountTTSToken(audioRequest.Input, audioRequest.Model)
 		if err != nil {
 			return service.OpenAIErrorWrapper(err, "count_audio_token_failed", http.StatusInternalServerError)
 		}