legends.py: fix unicode bug reported by Philippe Makowskic
legends.py: fix unicode bug reported by Philippe Makowskic

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