ip_flow.c ipf struct member ipf_start

["Liam J. Foy" <liamjfoy%gmail.com@localhost>]

hi,

i appreciate this is only a minor nit. however...

ip_flow.c contains the struct ipf which in turn contains a member
called ipf_start. this member is never used (only assigned, never
read) and I can't see a time it ever was. i was going to remove it but
another developer pointed out it might have been used for debugging
but no one knows.

i propose to remove it completely or #ifdef the member.

any comments?