In config._expandLicenseToken(), make sure traversed_groups is only initialized

when appropriate.

svn path=/main/trunk/; revision=15288

diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index bfb834a85fef139ed9160f431aec9d33b750c305..5608cd93e34377f6be34c2cfe89ff815099b66a4 100644 (file)
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -2292,7 +2292,7 @@ class config(object):
                        rValue.append(token)
                        return rValue
                group_name = license_name[1:]
-               if not traversed_groups:
+               if traversed_groups is None:
                        traversed_groups = set()
                license_group = self._license_groups.get(group_name)
                if group_name in traversed_groups: