Bug 123036 Data in a reprot is doubly stored
We currently stored data twice. Once in the content stream, once by DtE. The instance stored by content stream should not be there.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/document/RDSave.java
{
				saveExprOfOneRow( lastRowIndex );
			}
			catch ( IOException e )
			{
				throw new DataException( ResourceConstants.RD_SAVE_ERROR,
						e,
						"Result Data" );
			}
			exprValueMap.clear( );
			lastRowIndex = currIndex;
		}
		exprValueMap.put( exprID, exprValue );
	}
	/**
	 * Notify save needs to be finished
	 */
	public void saveFinish( ) throws DataException
	{
		initSave( );
		
		try
		{
			saveExprOfOneRow( this.lastRowIndex );
			dos.close( );
			bos.close( );
			outputStream.close( );
		}
		catch ( IOException e )
		{