98aefa8 wireshark: Adapt to dissector function header change

Authored and Committed by mprivozn 7 years ago
    wireshark: Adapt to dissector function header change
    
    In wireshark commit bbdd89b9 (contained in 2.1.0 release) they
    have changed prototype of dissector function. Now it returns
    number of bytes consumed by the dissector, and can get a pointer
    to user specified data (which we don't use).
    
    Signed-off-by: Michal Privoznik <mprivozn@redhat.com>