Bug 65839 [JUnit] update job leaks
There are situations when the JUnit update jobs are not properly stopped. Need to add safety checks to make sure that the update job is stopped.
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/ui/TestRunnerViewPart.java
private int fOrientation= VIEW_ORIENTATION_AUTOMATIC;
	/**
	 * The current orientation; either <code>VIEW_ORIENTATION_HORIZONTAL</code>
	 * <code>VIEW_ORIENTATION_VERTICAL</code>.
	 */
	private int fCurrentOrientation;
	/**
	 * Map storing TestInfos for each executed test keyed by
	 * the test name.
	 */
	private Map fTestInfos= new HashMap();
	/**
	 * The first failure of a test run. Used to reveal the
	 * first failed tests at the end of a run.
	 */
	private List fFailures= new ArrayList();
	protected JUnitProgressBar fProgressBar;
	protected ProgressImages fProgressImages;
	protected Image fViewImage;
	protected CounterPanel fCounterPanel;
	protected boolean fShowOnErrorOnly= false;
	protected Clipboard fClipboard;
	protected volatile String fStatus;
	/** 
	 * The tab that shows the stack trace of a failure
	 */
	private FailureTrace fFailureTrace;
	/** 
	 * The collection of ITestRunTabs
	 */