Bug 304863 [Compatibility] NPE thrown when using multiple consoles
1. Window > Show View > Console 2. Click the dropdown > New Console View 3. Close the new view. 4. Try clicking the dropdown again. 5. Nothing happens. An NPE is logged. java.lang.NullPointerException at org.eclipse.ui.internal.console.OpenConsoleAction.getMenu(OpenConsoleAction.java:83) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:530) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:452) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/RenderedToolBarRenderer.java
tb.getParent().layout(true);
		return tb;
	}
	/**
	 * @param toolBar
	 */
	protected void cleanUp(MRenderedToolBar element) {
		ArrayList<ArrayList<MToolBarElement>> lists = pendingCleanup
				.remove(element);
		if (lists == null) {
			return;
		}
		for (ArrayList<MToolBarElement> list : lists) {
			for (MToolBarElement child : list) {
				element.getChildren().remove(child);
			}
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.e4.ui.internal.workbench.swt.AbstractPartRenderer#hideChild
	 * (org.eclipse.e4.ui.model.application.MElementContainer,
	 * org.eclipse.e4.ui.model.application.MUIElement)
	 */
	@Override
	public void hideChild(MElementContainer<MUIElement> parentElement,
			MUIElement child) {
		super.hideChild(parentElement, child);