Bugfix: Stratum: Replies should not be sent if request id is null
Bugfix: Stratum: Replies should not be sent if request id is null

jameshilliard/4tar-eloipool,cinnamoncoin/eloipool-1,thrasher-/eloipool,svasva/eloipool,uingei/eloipool,thrasher-/eloipool,thrasher-/eloipool,uingei/eloi