This patch fixes an issue that uninitialized has_reply_ack
is used for setting message flags.
Coverity issue: 360834
Fixes: c60208dd6384 ("net/virtio-user: support reply-ack")
Signed-off-by: Chenbo Xia <chenbo.xia@intel.com>
Acked-by: Adrian Moreno <amorenoz@redhat.com>