Bug 153038 NPE when delete master page content in old report design.
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/layout/ReportEditorWithPalette.java
if ( provider != null )
		{
			provider.saveReport( getModel( ), getEditorInput( ), monitor );
			firePropertyChange( PROP_DIRTY );
		}
	}
	protected IReportProvider getProvider( )
	{
		if(provider == null)
		{
			provider = new FileReportProvider();
		}
		
		return provider;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.ui.parts.GraphicalEditor#doSaveAs()
	 */
	public void doSaveAs( )
	{
		final IReportProvider provider = getProvider();
		
		if ( provider != null )
		{
			IPath path = provider.getSaveAsPath( getEditorInput( ) );
			if(path == null)
			{