Fix exception-handling mistake in CLI

Author: dlenski

zxing/__main__.py

@@ -49,10 +49,12 @@ def main():
         else:
             ff = fn
 
+        bc = None
         try:
             bc = bcr.decode(ff, try_harder=args.try_harder, pure_barcode=args.pure_barcode)
         except BarCodeReaderException as e:
             p.error(e.message + ((': ' + e.filename) if e.filename else '') + (('\n\tCaused by: ' + repr(e.__cause__) if e.__cause__ else '')))
+
         if args.csv:
             wr.writerow((fn, bc.format, bc.type, bc.raw, bc.parsed) if bc else (fn, 'ERROR', None, None, None))
         else: