Bug 25827 Disposing of MemberFilterActionGroup
Build 2.0.2 and 2.1 When investigating an editor memory leak PR we found out that this group has a dispose method which is never called. When we then called from the editor it throw an exeption (viewer was disposed). Don't know if the group really needs dispose() if so it should get called.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
}
		return (IJavaElement[]) fInputHistory.toArray(new IJavaElement[fInputHistory.size()]);
	}
	
	/**
	 * Sets the history entries
	 */
	public void setHistoryEntries(IJavaElement[] elems) {
		fInputHistory.clear();
		for (int i= 0; i < elems.length; i++) {
			fInputHistory.add(elems[i]);
		}
		updateHistoryEntries();
	}
	
	/**
	 * Selects an member in the methods list or in the current hierarchy.
	 */	
	public void selectMember(IMember member) {
		ICompilationUnit cu= member.getCompilationUnit();
		if (cu != null && cu.isWorkingCopy()) {
			member= (IMember) cu.getOriginal(member);
			if (member == null) {
				return;
			}
		}
		if (member.getElementType() != IJavaElement.TYPE) {
			if (fHierarchyLifeCycle.isReconciled() && cu != null) {
				try {
					member= (IMember) EditorUtility.getWorkingCopy(member);