cannot invite guilds to sub if you are baned

cannot invite guilds to sub if any tree in your nation has a bane on it

cannot be subbed if you have a bane placed on you

src/engine/net/client/handlers/InviteToSubHandler.java

@@ -95,6 +95,21 @@ public class InviteToSubHandler extends AbstractClientMsgHandler {
         if (sourceGuild.equals(targetGuild))
             return true;
 
+        if(sourceGuild.getNation().getOwnedCity().getBane() != null)
+            return true; // cannot invite guilds to sub if you are baned
+
+        if(sourceGuild.getNation().getSubGuildList() != null){
+            for(Guild subGuild : sourceGuild.getNation().getSubGuildList()){
+                if(subGuild.getOwnedCity() != null)
+                    if(subGuild.getOwnedCity().getBane() != null)
+                        return true;//cannot invite guilds to sub if any tree in your nation has a bane on it
+            }
+        }
+
+        if(targetGuild.getOwnedCity() != null)
+            if(targetGuild.getOwnedCity().getBane() != null)
+                return true; // cannot be subbed if you have a bane placed on you
+
         //target must be GL or IC
 
         if (GuildStatusController.isInnerCouncil(target.getGuildStatus()) == false && GuildStatusController.isGuildLeader(target.getGuildStatus()) == false) {