fix tienlen首出上局赢家位置

gamesrv/tienlen/scenepolicy_tienlen.go

@@ -1058,7 +1058,7 @@ func (this *SceneHandCardStateTienLen) OnEnter(s *base.Scene) {
 		if len(sceneEx.tianHuSnids) == 0 { //没有天胡玩家
 			//有赢家，赢家先出；无赢家手持最小牌先
 			winPos := int32(sceneEx.FindWinPos())
-			var pos int32
+			pos := winPos
 			if winPos == -1 {
 				pos = sceneEx.startOpPos
 			}