fixed multiple MIDI devices S/N

hardware/hardware.go

@@ -152,11 +152,11 @@ func (h *HardwareManager) Scan(ctx context.Context) error {
 		return fmt.Errorf("No peripherals driver registered")
 	}
 	for _, driver := range h.drivers {
-		finder := driver
+		driverCopy := driver
 		go func() {
-			err := driver.Scan(ctx)
+			err := driverCopy.Scan(ctx)
 			if err != nil {
-				fmt.Printf("Unable to scan peripherals with the %s driver: %s\n", finder.GetName(), err)
+				fmt.Printf("Unable to scan peripherals with the %s driver: %s\n", driverCopy.GetName(), err)
 				return
 			}
 		}()