Comment 2 for bug 788483

StacktraceTop:
 init_stream_internal_ (decoder=0x0, read_callback=0x7f9e08567000 <gst_flac_dec_read_stream>, seek_callback=0, tell_callback=0, length_callback=0, eof_callback=0, write_callback=0x7f9e085651b0 <gst_flac_dec_write_stream>, metadata_callback=0x7f9e085678c0 <gst_flac_dec_metadata_cb>, error_callback=0x7f9e085644e0 <gst_flac_dec_error_cb>, client_data=0x1a88ba0, is_ogg=0) at stream_decoder.c:386
 FLAC__stream_decoder_init_stream (decoder=0x0, read_callback=0x7f9e08567000 <gst_flac_dec_read_stream>, seek_callback=0, tell_callback=0, length_callback=0, eof_callback=0, write_callback=0x7f9e085651b0 <gst_flac_dec_write_stream>, metadata_callback=0x7f9e085678c0 <gst_flac_dec_metadata_cb>, error_callback=0x7f9e085644e0 <gst_flac_dec_error_cb>, client_data=0x1a88ba0) at stream_decoder.c:495
 gst_flac_dec_chain (pad=<value optimized out>, buf=0x7f9e00024a20) at gstflacdec.c:1322
 gst_pad_push (pad=0x1a7f340, buffer=0x7f9e00024a20) at gstpad.c:4665
 gst_base_parse_push_buffer (parse=0x1a4cc00, buffer=0x7f9e00024a20) at gstbaseparse.c:1668