Copy Constructor implemented incorrectly.

[usama54321]

The copy constructor here is implemented incorrectly. This results in buggy behavior. The expected constructor should copy over the configuration of the previous object, as well as the BBR States. The problem occurs when the object is copied over, and the state pointer is set to NULL in the bbr machine.

bbr/src/bbr/tcp-bbr.cc

Line 93 in 16ecc20

TcpBbr::TcpBbr(const TcpBbr &sock) :

I have fixed it locally, but the solution is really hacky, thus no PR