bug fix: set_drugbank_link does not exist in old Compound model

ippisite/ippidb/migrations/0063_fill_drugbank_links.py

@@ -18,7 +18,7 @@ def set_compound_drugbank_links(apps, schema_editor):
     Compound = apps.get_model("ippidb", "Compound")
     for compound in Compound.objects.all():
         # same bug than autofill commit '9566e42e'
-        ((Compound__latest)(set_drugbank_link)).set_drugbank_link()
+        ((Compound__latest)(compound)).set_drugbank_link()
         compound.save()