Merge commit '85f947ae'

* commit '85f947ae':
  lavc: remove a pointless check in decode_audio4()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/utils.c

@@ -2299,7 +2299,7 @@ fail:
                 frame->extended_buf    = NULL;
                 frame->nb_extended_buf = 0;
             }
-        } else if (frame->data[0])
+        } else
             av_frame_unref(frame);
     }