I04_1-150: minor, formatting

IsabellaRey · IsabellaRey · commit 5053fd6a90d9 · 2017-10-02T09:43:36.000+01:00
diff --git a/dls_barcode/camera/scanner_message.py b/dls_barcode/camera/scanner_message.py
@@ -1,6 +1,7 @@
 class NoNewBarcodeMessage:
     pass
 
+
 class ScanErrorMessage:
     def __init__(self, content):
         self._content = content
