python3 test fix

tests/unit/utils/test_settings.py

@@ -1,3 +1,4 @@
+from flaskbb._compat import iterkeys
 from flaskbb.utils.settings import FlaskBBConfig
 
 
@@ -11,4 +12,4 @@ def test_flaskbb_config(default_settings):
     flaskbb_config['PROJECT_TITLE'] = 'FlaskBBTest'
     assert flaskbb_config['PROJECT_TITLE'] == 'FlaskBBTest'
     # test __iter__
-    assert flaskbb_config.iterkeys().next() == "USERS_PER_PAGE"
+    assert iterkeys(flaskbb_config).next() == "USERS_PER_PAGE"