Bug 176441 [Markers] NPE while refreshing the problem view
I got this exception using I20070228-0930. No steps to reproduce. It seems to happen when refreshing the problem view. java.lang.NullPointerException at org.eclipse.ui.views.markers.internal.MarkerAdapter.buildAllMarkers(MarkerAdapter.java:251) at org.eclipse.ui.views.markers.internal.MarkerView.updateForContentsRefresh(MarkerView.java:570) at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.run(MarkerView.java:151) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/TableView.java
* Return the viewer.
	 * 
	 * @return TreeViewer
	 */
	protected TreeViewer getViewer() {
		return viewer;
	}
	/**
	 * Return the tree for the receiver.
	 * 
	 * @return Tree
	 */
	protected Tree getTree() {
		return getViewer().getTree();
	}
	protected SelectionListener getHeaderListener() {
		return new SelectionAdapter() {
			/**
			 * Handles the case of user selecting the header area.
			 */
			public void widgetSelected(SelectionEvent e) {
				final TreeColumn column = (TreeColumn) e.widget;
				final IField field = (IField) column.getData();
				try {
					IWorkbenchSiteProgressService progressService = getProgressService();
					if (progressService == null)
						BusyIndicator.showWhile(getSite().getShell()
								.getDisplay(), new Runnable() {
							/*
							 * (non-Javadoc)