fixed the issue where polymorphic_primary_key_name was incorrect for …#795

bckohan merged 1 commit intojazzband:masterjazzband/django-polymorphic:masterfrom

JohananOppongAmoateng:primary-key-name-regressionJohananOppongAmoateng/django-polymorphic:primary-key-name-regressionCopy head branch name to clipboard