of1.3: Fix parsing of OFP_QUEUE_GET_CONFIG_REPLY

Make parsing similar to that of OpenFlow 1.2 (message has the same format as in 1.3)

Signed-off-by: Oren Spector <oren@oliver-solutions.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>