fix typo

server/djrandom/model/mp3.py

@@ -153,7 +153,7 @@ class MP3(Base):
     @classmethod
     def get_with_no_features(cls):
         return cls.query.filter((cls.state == cls.READY)
-                                & (cls.has_fingerprint == 0))
+                                & (cls.has_features == 0))
 
     @classmethod
     def get_with_bad_metadata(cls):