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
return status == STATUS_END;
	}
	protected boolean allowPageBreak( )
	{
		return true;
	}
	public PDFStackingLM getParent( )
	{
		return this.parent;
	}
	public void setParent( PDFStackingLM parent )
	{
		this.parent = parent;
	}
	protected IContentEmitter getEmitter( )
	{
		return this.emitter;
	}
	protected PDFLayoutManagerFactory getFactory( )
	{
		return context.getFactory( );
	}
	protected boolean isPageBreakBefore( )
	{
		if ( canPageBreak( ) )
		{
			return needPageBreakBefore( );
		}
		return false;
	}