Bug 204245 Blank column on visibility column in excel[0300]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/buffermgr/TableContentLayout.java
newRows[rowId] = row;
			}
			rows = newRows;
			rowBufferSize = newRowBufferSize;
		}
		if ( newColBufferSize > colBufferSize )
		{
			for ( int rowId = 0; rowId < rowBufferSize; rowId++ )
			{
				Row row = rows[rowId];
				Cell[] newCells = new Cell[newColBufferSize];
				if ( row.cells != null )
				{
					System.arraycopy( row.cells, 0, newCells, 0, colBufferSize );
				}
				for ( int colId = colBufferSize; colId < newColBufferSize; colId++ )
				{
					newCells[colId] = Cell.EMPTY_CELL;
				}
				row.cells = newCells;
			}
			colBufferSize = newColBufferSize;
		}
	}
	/**
	 * fill empty cells in the table.
	 * 
	 * @param rowId
	 *            row index
	 * @param colId