[network_manager] don't set cookiejar to None
[network_manager] don't set cookiejar to None

sunu/splash,pawelmhm/splash,Youwotma/splash,kmike/splash,pawelmhm/splash,dwdm/splash,kod3r/splash,sunu/splash,pawelmhm/splash,Youwotma/splash,pombredanne/splash,kmike/splash,kod3r/splash,kod3r/splash,Youwotma/splash,pombredanne/splash,dwdm/splash,sunu/splash,pombredanne/splash,dwdm/splash,kmike/splash