Bug 193467 URL hyperlink can't work in chart viewer
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#finish()
	 */
	public void finish( )
	{
		logger.log( ILogger.INFORMATION,
				Messages.getString( "ChartReportItemPresentationImpl.log.finishStart" ) ); 
		
		try
		{
			
			imageMap = null;
			if ( fis != null )
			{
				fis.close( );
				fis = null;
			}
		}
		catch ( IOException ioex )
		{
			logger.log( ioex );
		}
		logger.log( ILogger.INFORMATION,
				Messages.getString( "ChartReportItemPresentationImpl.log.finishEnd" ) ); 
	}
}