Convert bug count to int.

releasehealth/stats.py

@@ -91,7 +91,7 @@ class Stats(object):
                     continue
 
                 key = '%s:%s' % (vernum, query['id'])
-                current_bug_num = r.json()['bug_count']
+                current_bug_num = int(r.json()['bug_count'])
                 last_bug_num = (None if not self.redis_client.llen(key) else
                                 json.loads(self.redis_client.lindex(key, 0))[0])