table: fix UpdatePathAttrs2ByteAs
table: fix UpdatePathAttrs2ByteAs

Needs to clone PathAttributes. We can't touch PathAttributes in table.

Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

postfix/gobgp,a16/gobgp,h-naoto/gobgp,postfix/gobgp,osrg/gobgp,tamihiro/gobgp,YujiOshima/gobgp,j-kato/gobgp,a16/gobgp,a16/gobgp,tamihiro/gobgp,tamihiro/gobgp,ishidawataru/gobgp,h-naoto/gobgp,h-naoto/gobgp,ramrunner/gobgp,tamihiro/gobgp,j-kato/gobgp,osrg/gobgp,YujiOshima/gobgp,postfix/gobgp,a16/gobgp,ramrunner/gobgp,Dipsingh/gobgp,Dipsingh/gobgp,YujiOshima/gobgp,ishidawataru/gobgp,osrg/gobgp,osrg/gobgp,fujita/gobgp,a16/gobgp,j-kato/gobgp,fujita/gobgp,a16/gobgp,fujita/gobgp,Dipsingh/gobgp,a16/gobgp,ishidawataru/gobgp,fujita/gobgp,ramrunner/gobgp