Logic fix in siege minions.

src/engine/objects/Mob.java

@@ -513,11 +513,7 @@ public class Mob extends AbstractIntelligenceAgent {
 
         Mob siegeMinion;
 
-        int maxSlots = 1;
-        if(artyCaptain.getContractID() == 839)//artillery captain for bulwark
-            maxSlots = 3;
-
-        if (artyCaptain.getSiegeMinionMap().size() == maxSlots)
+        if (artyCaptain.getSiegeMinionMap().size() == 3)
             return null;
 
         siegeMinion = new Mob();