Fix `spacy.util.minibatch` when the size iterator is finished (#6745)
Fix `spacy.util.minibatch` when the size iterator is finished (#6745)


explosion/spaCy,spacy-io/spaCy,spacy-io/spaCy,spacy-io/spaCy,explosion/spaCy,explosion/spaCy,honnibal/spaCy,explosion/spaCy,honnibal/spaCy,spacy-io/spaCy,explosion/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,spacy-io/spaCy,honnibal/spaCy