renderSVG.py: attempt to fix negative dimensions for rect
renderSVG.py: attempt to fix negative dimensions for rect

kanarelo/reportlab,Distrotech/reportlab,Distrotech/reportlab,Distrotech/reportlab,kanarelo/reportlab,kanarelo/reportlab,Distrotech/reportlab,kanarelo/reportlab,kanarelo/reportlab,Distrotech/reportlab