Fix endpoint cnt decline overflow
Fix endpoint cnt decline overflow

Signed-off-by: Lei Jitang <9ac444d2b5df3db1f31aa1c6462ac8e9e2bde241@huawei.com>

ityangchen/libnetwork,vdemeester/libnetwork,medallia/libnetwork,coolljt0725/libnetwork,mbanikazemi/libnetwork,ityangchen/libnetwork,abhi/libnetwork,WeiZhang555/libnetwork,abhi/libnetwork,medallia/libnetwork,curtiszimmerman/libnetwork,mahak/libnetwork,fcrisciani/libnetwork,WeiZhang555/libnetwork,tmakita/libnetwork,sainath14/libnetwork,docker/libnetwork,YujiOshima/libnetwork,mbanikazemi/libnetwork,YujiOshima/libnetwork,kolyshkin/libnetwork,msabansal/libnetwork,kolyshkin/libnetwork,cpuguy83/libnetwork,vdemeester/libnetwork,docker/libnetwork,mahak/libnetwork,kolyshkin/libnetwork,medallia/libnetwork,msabansal/libnetwork,coolljt0725/libnetwork,allencloud/libnetwork,mYmNeo/libnetwork,sainath14/libnetwork,fcrisciani/libnetwork,abhi/libnetwork,allencloud/libnetwork,vdemeester/libnetwork,mYmNeo/libnetwork,cpuguy83/libnetwork,tmakita/libnetwork,mahak/libnetwork,docker/libnetwork,curtiszimmerman/libnetwork