Fix AFLD production eva (#494).

OpenRA.Mods.Cnc/ProductionAirdrop.cs

@@ -21,6 +21,7 @@ namespace OpenRA.Mods.Cnc
 {
 	public class ProductionAirdropInfo : ProductionInfo
 	{
+		public readonly string ReadyAudio = "reinfor1.aud";
 		public override object Create(ActorInitializer init) { return new ProductionAirdrop(this); }
 	}
 	
@@ -60,6 +61,7 @@ namespace OpenRA.Mods.Cnc
 					
 					rb.PlayCustomAnimRepeating(self, "idle");
 					self.World.AddFrameEndTask(ww => DoProduction(self, producee, exit));
+					Sound.PlayToPlayer(self.Owner, (Info as ProductionAirdropInfo).ReadyAudio);
 				}));
 				a.QueueActivity(Fly.ToCell(endPos));
 				a.QueueActivity(new RemoveSelf());