Bug 113938 Report is marked dirty when open/close cascading parameter dialog without doing any operation on it
description: Report is marked dirty when open/close cascading parameter dialog without doing any operation on it steps to reproduce: 1.new a cascading parameter group 2.save the reprot 3.double click the cascading parameter to bring out edit box 4.click OK to close edit box actual result: Report has been marked dirty expected result: No dirty marked for that no operations done in edit parameter dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ExpressionProvider.java
*            the handle of the module
	 * @param dataSetList
	 *            the list of the data set
	 */
	public ExpressionProvider( )
	{
		this( SessionHandleAdapter.getInstance( ).getReportDesignHandle( ) );
	}
	/**
	 * Create a new expression provider with the current module and the given
	 * dataset list
	 * 
	 * @param dataSetList
	 *            the list of the data set
	 */
	public ExpressionProvider( List dataSetList )
	{
		this( SessionHandleAdapter.getInstance( ).getReportDesignHandle( ),
				dataSetList );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.ui.dialogs.IExpressionProvider#getOperators()
	 */
	public String[] getOperators( )
	{
		return OPERATORS_ON_BAR;
	}
	/*