Server thread stops when window has been closed

src/main/java/seng302/server/ServerThread.java

@@ -98,7 +98,7 @@ public class ServerThread implements Runnable, Observer {
                 boatStatus = BoatStatus.PRESTART;
                 thereAreBoatsNotFinished = true;
             }
-            
+
             BoatSubMessage m = new BoatSubMessage(b.getSourceID(), boatStatus, b.getLastPassedCorner().getSeqID(), 0, 0, b.getEstimatedTimeTillFinish(), b.getEstimatedTimeTillFinish());
             boatSubMessages.add(m);
         }