Change __contant_htons() to htons() in the IPVS code when not in an
initializer.

-Brian
Signed-off-by: NBrian Haley <brian.haley@hp.com>
Acked-by: NJulius Volz <juliusv@google.com>
Signed-off-by: NSimon Horman <horms@verge.net.au>