Bug 144106 [Regression]Parameter request page pops up twice while running the report with cascading parameter
Steps to reproduce: 1.Add a cascading parameter group with a parameter 2.Preview Expected result: The parameter request page just pops up once for input value Actual result: The parameter request page pops up twice when inputting parameter value
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
if ( handle != null )
			{
				Iterator parameters = parameterList.iterator( );
				while ( parameters != null && parameters.hasNext( ) )
				{
					ScalarParameterHandle parameter = (ScalarParameterHandle) parameters
							.next( );
					if ( parameter != null && parameter.getName( ) != null )
						this.configMap.put( parameter.getName( ), null );
				}
				Iterator configVars = handle.configVariablesIterator( );
				while ( configVars != null && configVars.hasNext( ) )
				{
					ConfigVariableHandle configVar = (ConfigVariableHandle) configVars
							.next( );
					if ( configVar != null && configVar.getName( ) != null )
					{
						
						String paramName = getParameterName( configVar
								.getName( ) );
						String paramValue = configVar.getValue( );
						ScalarParameterHandle parameter = (ScalarParameterHandle) findParameter( paramName );
						
						
						if ( paramValue != null && parameter != null )
						{
							try
							{
								Object paramValueObj = ParameterValidationUtil