inet: raw -- Don't carry zero options into the image

Otherwise there might be a raw socket with AF_INET
family and IPPROTO_ICMPV6 protocol which surely
don't have to restore it.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>