[Bro] Bug (?) in TCP_Contents

[José María González]

Hi, 

When Bro sees an ACK for a packet before the packet 
itself (packet reordering), it considers that it already 
delivered the packet to the upper protocols, because 
it's acked. (see TCP_Contents.cc, line 272). 

I was wondering whether this is the intended behavior 
or it's a bug. 

-Chema