[Bug] When transfer have more than 1700 confirmation

[alpha_one_x86]

Hello,

When a transfer have more then 1700 confirmation, I start forging, the the client have this bug:

Code: [Select]

java.lang.NullPointerException
        at Nxt$Account.getGuaranteedBalance(Nxt.java:596)
        at Nxt$Account.getEffectiveBalance(Nxt.java:516)
        at Nxt$8.run(Nxt.java:6574)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)Cheers,