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
{
			int rowIndex = cache.getMaxRowIndex( currentColumnIndex );
			SheetData lastData = cache.getColumnLastData( currentColumnIndex );
			rowIndexes[currentColumnIndex - startColumnIndex] = rowIndex;
			int span = lastData != null ? lastData.getRowSpanInDesign( ) : 0;
			if ( span == 0
					|| ( span == 1 && !isInContainer( lastData, rowContainer ) ) )
			{
				maxRowIndex = maxRowIndex > rowIndex ? maxRowIndex : rowIndex;
			}
		}
		int startRowIndex = rowContainer.getRowIndex( );
		if ( maxRowIndex <= startRowIndex )
		{
			maxRowIndex = startRowIndex + 1;
		}
		rowContainer.setRowIndex( maxRowIndex );
		float resize = height / ( maxRowIndex - startRowIndex );
		for ( int i = startRowIndex; i < maxRowIndex; i++ )
		{
			cache.setRowHeight( i, resize );
		}
		for ( int currentColumnIndex = startColumnIndex; currentColumnIndex < endColumnIndex; currentColumnIndex++ )
		{
			int rowspan = maxRowIndex - rowIndexes[currentColumnIndex - startColumnIndex];
			SheetData upstair = cache.getColumnLastData( currentColumnIndex );
			if ( rowspan > 0 )
			{
				if ( upstair != null && canSpan( upstair, rowContainer ) )
				{