Fixed getting openness score

ckanext/odsh/plugin.py

@@ -405,8 +405,8 @@ class OdshPlugin(plugins.SingletonPlugin, DefaultTranslation, DefaultDatasetForm
             score = -1
             for r in d['resources']:
                 if 'qa' in r:
-                    i = r['qa'].find('openness_score')
-                    s = int(r['qa'][i+17])
+                    if 'openness_score' in r['qa']:
+                        s = int(r['qa']['openness_score'])
                         if s > score:
                             score = s
             if score > 0: