fixed demos not found error

csgo/demo_parser.go

@@ -54,9 +54,9 @@ type Spray struct {
 	Spray [][]float32
 }
 
-type DemoNotFoundError struct {
-	error
-}
+var (
+	DemoNotFoundError = errors.New("demo not found")
+)
 
 func (s *Sprays) Add(currentTime time.Duration, sprayPoint []float32, timeout int) {
 	sprayFound := false
@@ -134,7 +134,7 @@ func (d *Demo) download() (io.Reader, error) {
 	}
 
 	if r.StatusCode != http.StatusOK {
-		return nil, DemoNotFoundError{fmt.Errorf("demo not found")}
+		return nil, DemoNotFoundError
 	}
 	return bzip2.NewReader(r.Body), nil
 }
@@ -211,7 +211,7 @@ workloop:
 		startTime := time.Now()
 		fDemo, err := demo.download()
 		if err != nil {
-			if errors.Is(err, DemoNotFoundError{}) {
+			if errors.Is(err, DemoNotFoundError) {
 				_ = utils.Rollback(tx, err)
 				if tMatch.Date.Before(time.Now().UTC().AddDate(0, 0, -30)) {
 					log.Infof("[DP] demo expired for match %d", tMatch.ID)