Bug 130091 [regression]Save button failed after edit script in data item.
Description: Save button failed after edit script in data item. Steps to reproduce: 1. New a report 2. Insert a data item and input "data". 3. Select data item and transfer to script pane, input some words. 4. Transfer back to Layout and save the report. Expected result: Save action works. Actual result: Save action failed.
UI/org.eclipse.birt.report.designer.ui.ide/src/org/eclipse/birt/report/designer/ui/editors/ReportEditorProxy.java
if ( part == this )
		{
			SessionHandleAdapter.getInstance( ).clear( instance.getModel( ) );
		}
	}
	public void partDeactivated( IWorkbenchPart part )
	{
		instance.partDeactivated( part );
	}
	public void partOpened( IWorkbenchPart part )
	{
		instance.partOpened( part );
	}
	public void propertyChanged( Object source, int propId )
	{
		if(propId == IWorkbenchPartConstants.PROP_PART_NAME )
		{
			setPartName( instance.getPartName( ) );
		}
		
		firePropertyChange( propId );
	}
	public IEditorPart getEditorPart( )
	{
		return instance;
	}
}