Fix map-player bots not working on dedicated servers.

The host is almost never going to be client index 0
on public dedicated servers. Set to the actual host
client ID instead.

OpenRA.Game/Player.cs

@@ -178,7 +178,7 @@ namespace OpenRA
 			else
 			{
 				// Map player
-				ClientIndex = 0; // Owned by the host (TODO: fix this)
+				ClientIndex = world.LobbyInfo.Clients.FirstOrDefault(c => c.IsAdmin)?.Index ?? 0; // Owned by the host (TODO: fix this)
 				Color = pr.Color;
 				PlayerName = pr.Name;
 				NonCombatant = pr.NonCombatant;