Fix build

Signed-off-by: Lixfel <agga-games@gmx.de>

FightSystem_Core/src/de/steamwar/fightsystem/fight/JoinRequest.java

@@ -76,7 +76,7 @@ public class JoinRequest {
         }
     }
 
-    public void decline() {
+    public void decline(FightTeam declinor) {
         FightSystem.getMessage().sendPrefixless("YOUR_REQUEST_DECLINED", player, ChatMessageType.ACTION_BAR);
         waitOnApproval.forEach(t -> t.broadcast("REQUEST_DECLINED", player.getName()));
         silentDecline();