paragraph.py: fix bug in _fragWordIter (transplant from 3772 with changes)
paragraph.py: fix bug in _fragWordIter (transplant from 3772 with changes)

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