Bug 95548 Editors page not sized properly on startup
build N20050517, open preferences dialog to editors page (under General). now close and open the dialog again and note that the dialog is too short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
* @since 3.1
	 */
	protected Layout getPageLayout() {
		return new PageLayout();
	}
	/**
	 * Creates the wizard's title area.
	 * 
	 * @param parent
	 *            the SWT parent for the title area composite.
	 * @return the created title area composite.
	 */
	protected Composite createTitleArea(Composite parent) {
		
		
		int margins = 2;
		titleArea = new Composite(parent, SWT.NONE);
		FormLayout layout = new FormLayout();
		layout.marginHeight = 0;
		layout.marginWidth = margins;
		titleArea.setLayout(layout);
		
		GridData layoutData = new GridData(GridData.FILL_HORIZONTAL);
		layoutData.heightHint = JFaceResources.getImage(PREF_DLG_TITLE_IMG).getBounds().height
				+ (margins * 3);
		titleArea.setLayoutData(layoutData);
		
		messageArea = new DialogMessageArea();
		messageArea.createContents(titleArea);
		titleArea.addControlListener(new ControlAdapter() {