Merge pull request #86 from raumobil/fix/issuingDate-in-uHeadRecod

fix(uhead encoding): use 24h hours for encoding

Author: CGantert345

src/main/java/org/uic/barcode/staticFrame/UHEADDataRecord.java

@@ -257,7 +257,7 @@ protected void encodeContent() throws IOException, EncodingFormatException {
 					                           now.get(Calendar.DAY_OF_MONTH),
 					                           now.get(Calendar.MONTH) + 1,
 					                           now.get(Calendar.YEAR),
-					                           now.get(Calendar.HOUR),
+					                           now.get(Calendar.HOUR_OF_DAY),
 					                           now.get(Calendar.MINUTE));