wumpus hangs at kill

[Wouter1]

wumpus environment hangs when you try to kill it from GOAL

This is most likely the cause

Thread [Messages->Environment] (Suspended)  
    waiting for: EventQueue$1AWTInvocationLock  (id=55) 
    Object.wait(long) line: not available [native method]   
    EventQueue$1AWTInvocationLock(Object).wait() line: 503  
    EventQueue.invokeAndWait(Object, Runnable) line: 1270   
    WumpusApp(Window).doDispose() line: 1209    
    WumpusApp(Window).dispose() line: 1147  
    WumpusWorld.setUp(boolean) line: 160    
    WumpusEnvironment.parseParameters(Map<String,Parameter>) line: 324  
    WumpusEnvironment.reset(Map<String,Parameter>) line: 277    
    LocalMessagingEnvironment$Messages2Environment.invoke(Reset) line: 278  
    Reset.invoke(LocalMessagingEnvironment$Messages2Environment) line: 20   
    LocalMessagingEnvironment$Messages2Environment.handleAction(Action) line: 169   
    LocalMessagingEnvironment$Messages2Environment.run() line: 153  
    Thread.run() line: 745  

[Wouter1]

fixed