Fixing few mistakes.

modoboa/admin/models.py

@@ -663,7 +663,7 @@ class Domain(DatesAware):
         :param User account: the administrotor to remove
         """
         from modoboa.lib.permissions import ungrant_access_to_object
-        ungrant_access_to_object(account, self)
+        ungrant_access_to_object(self, account)
         for mb in self.mailbox_set.all():
             if mb.user.has_perm("admin.add_domain"):
                 continue

modoboa/admin/views.py

@@ -152,7 +152,7 @@ def editdomain(request, dom_id, tplname="admin/editdomainform.html"):
         form = DomainForm(request.user, request.POST, instances=instances)
         if form.is_valid():
             try:
-                domain = form.save(request.user)
+                form.save(request.user)
             except AdminError, e:
                 error = str(e)
             else: