Fix sign error for rounded content box
Fix sign error for rounded content box

Kozea/WeasyPrint,jasco/WeasyPrint,Kozea/WeasyPrint,prepare/TestWeasyPrint,andrewleech/WeasyPrint,marclaporte/WeasyPrint,andrewleech/WeasyPrint,marclaporte/WeasyPrint,jasco/WeasyPrint,prepare/TestWeasyPrint