shithub: sox

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Fix crash when no comment

--- a/src/flac.c

+++ b/src/flac.c

@@ -471,7 +471,8 @@

   Encoder * encoder = (Encoder *) format->priv;

   FLAC__StreamEncoderState state = FLAC__stream_encoder_get_state(encoder->flac);

-  FLAC__metadata_object_delete(encoder->metadata);

+  if (encoder->metadata)

+    FLAC__metadata_object_delete(encoder->metadata);

   FLAC__stream_encoder_finish(encoder->flac);

   FLAC__stream_encoder_delete(encoder->flac);

   free(encoder->decoded_samples);