Bug 315050 [Automation][Regression]Image size is different from golden file when preview as xls
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
BlankData blankData = (BlankData) data;
						if ( blankData.getType( ) == Type.VERTICAL )
						{
							data.setHeight( data.getHeight( ) - lastRowHeight );
						}
					}
					SheetData realData = getRealData( data );
					if ( realData != null )
					{
						int realDataRowEnd = realData.getRowIndex( )
								+ realData.getRowSpan( );
						if ( realDataRowEnd == data.getRowIndex( ) )
						{
							rowHeight = data.getHeight( ) > rowHeight ? data
									.getHeight( ) : rowHeight;
						}
					}
				}
			}
			cache.setRowHeight( rowIndex, rowHeight );
		}
	}
	private int getRowIndex( SheetData[] rowData )
	{
		for ( int j = 0; j < rowData.length; j++ )
		{
			SheetData data = rowData[j];