libavformat/utils.c:3103: error: Uninitialized Value
  The value read from ret was never initialized.

libavformat/utils.c:3103:5: 
3101.         av_opt_free(s->priv_data);
3102.     av_freep(&s->priv_data);
3103.     return ret;
          ^
3104. }
3105. 
