Bug 151202 [regression]Set default master page to item in cell will cause blank page
Description: Set default master page to item in cell will cause blank page Steps to reproduce: 1. New a report 2. Insert a grid(1*1) 3. Insert a label to grid cell 4. Select the label and set default master page to it 5. Preview in Web Viewer and pdf Expected result: No blank page, just one page for grid display. Actual result: A blank page before grid page
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
style.setProperty( IStyle.STYLE_PADDING_BOTTOM, IStyle.NUMBER_0 );
		}
	}
	protected void removeBorder( IStyle style )
	{
		if ( style != null )
		{
			style.setProperty( IStyle.STYLE_BORDER_LEFT_WIDTH, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_BORDER_RIGHT_WIDTH, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_BORDER_TOP_WIDTH, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_BORDER_BOTTOM_WIDTH, IStyle.NUMBER_0 );
		}
	}
	protected void removeMargin( IStyle style )
	{
		if ( style != null )
		{
			style.setProperty( IStyle.STYLE_MARGIN_LEFT, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_MARGIN_RIGHT, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_MARGIN_TOP, IStyle.NUMBER_0 );
			style.setProperty( IStyle.STYLE_MARGIN_BOTTOM, IStyle.NUMBER_0 );
		}
	}
	protected boolean isHidden( )
	{
		if ( content != null )
		{
			IStyle style = content.getComputedStyle( );
			String formats = style.getVisibleFormat( ).toUpperCase( );
			String format = emitter.getOutputFormat( ).toUpperCase( );