Fix in pages that don't have qr code

Samo Penic

2019-01-24 8dad6520729d26d90ebee48939d7f2a1fd73dd38

 aoi_ocr/Ocr.py

@@ -290,6 +290,8 @@

    def get_paper_ocr_data(self):
        data = self.get_code_data()
        if self.QRData is None:
            return None
        data["qr"] = bytes.decode(self.QRData, 'utf8')
        data["errors"] = self.errors
        data["warnings"] = self.warnings