copy loop variable to goroutine (#417)
copy loop variable to goroutine (#417)

Signed-off-by: Snow Pettersen <18824beaba694b0802bee531b635db27ba08e6bb@lyft.com>
istio/go-control-plane,envoyproxy/go-control-plane,envoyproxy/go-control-plane,istio/go-control-plane