message: fix UPC-A decoding
diff: @@ -46,7 +46,9 @@ export default class MultiFormatUPCEANReader extends OneDReader {
  if (possibleFormats.indexOf(BarcodeFormat.EAN_13) > -1) {
  readers.push(new EAN13Reader());
  - } else if (possibleFormats.indexOf(BarcodeFormat.UPC_A) > -1) {
  + }
  +
  + if (possibleFormats.indexOf(BarcodeFormat.UPC_A) > -1) {
  readers.push(new UPCAReader());
  }
  @@ -61,7 +63,7 @@ export default class MultiFormatUPCEANReader extends OneDReader {
  if (readers.length === 0) {
  readers.push(new EAN13Reader());
  - // UPC-A is covered by EAN-13
  + readers.push(new UPCAReader());
  readers.push(new EAN8Reader());
  readers.push(new UPCEReader());
  }
  