network: fix race in read access to map
network: fix race in read access to map

Signed-off-by: Alexander Morozov <2043cda4df124b840b98ee1c4307c199042efdf7@gmail.com>

mahak/libnetwork,kolyshkin/libnetwork,kolyshkin/libnetwork,mYmNeo/libnetwork,allencloud/libnetwork,docker/libnetwork,abhi/libnetwork,WeiZhang555/libnetwork,mahak/libnetwork,YujiOshima/libnetwork,sainath14/libnetwork,abhi/libnetwork,ityangchen/libnetwork,abhi/libnetwork,curtiszimmerman/libnetwork,docker/libnetwork,medallia/libnetwork,cpuguy83/libnetwork,mbanikazemi/libnetwork,kolyshkin/libnetwork,fcrisciani/libnetwork,cpuguy83/libnetwork,vdemeester/libnetwork,medallia/libnetwork,mahak/libnetwork,fcrisciani/libnetwork,tmakita/libnetwork,curtiszimmerman/libnetwork,msabansal/libnetwork,WeiZhang555/libnetwork,vdemeester/libnetwork,mYmNeo/libnetwork,allencloud/libnetwork,vdemeester/libnetwork,YujiOshima/libnetwork,tmakita/libnetwork,ityangchen/libnetwork,msabansal/libnetwork,medallia/libnetwork,sainath14/libnetwork,docker/libnetwork,mbanikazemi/libnetwork