jndn

In TestControlParametersEncodeDecode.testEncodeDecode I added the following test which fails:

assertEquals("decoded forwarding flags capture is different",
             controlParameters.getForwardingFlags().getCapture(),
      decodedControlParameters.getForwardingFlags().getCapture());

decodeControlParameters has:

ForwardingFlags flags = new ForwardingFlags();
flags.setNfdForwardingFlags((int) decoder.
  readOptionalNonNegativeIntegerTlv(Tlv.ControlParameters_Flags,
    endOffset));

But readOptionalNonNegativeIntegerTlv returns -1 if the forwarding flags are omitted, which means that all bits are 1 and setNfdForwardingFlags sets all the flags. Need to explicitly check if ControlParameters_Flags are present. (NDN-JS too)