Bug 49005 Preference page doesn't get enough space to draw itself
200312162000 There are cases where the preference dialog doesn't allocate enough space for a page to draw itself. The width of the page seems to be a few pixels short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
private void setSelectedNode() {
		String storeValue = null;
		IStructuredSelection selection = (IStructuredSelection) getTreeViewer().getSelection();
		if (selection.size() == 1) {
			IPreferenceNode node = (IPreferenceNode) selection.getFirstElement();
			storeValue = node.getId();
		}
		setSelectedNodePreference(storeValue);
	}
	/**
	 * Get the name of the selected item preference
	 */
	protected void setSelectedNodePreference(String pageId) {
		lastPreferenceId = pageId;
	}
	/**
	 * Changes the shell size to the given size, ensuring that
	 * it is no larger than the display bounds.
	 * 
	 * @param width the shell width
	 * @param height the shell height
	 */
	private void setShellSize(int width, int height) {
		getShell().setSize(width, height);
		constrainShellSize();
	}
	/**
	 * Show the new message
	 */
	private void showMessage(String newMessage, Image newImage) {