message: Fix blosc filter on incompressible buffer
diff: @@ -204,7 +204,7 @@ unsafe fn filter_blosc_compress(
  blosc_set_compressor(cfg.compname);
  let status =
  blosc_compress(cfg.clevel, cfg.doshuffle, cfg.typesize, nbytes, *buf, outbuf, nbytes);
  - if status >= 0 {
  + if status > 0 {
  libc::free(*buf);
  *buf = outbuf;
  status as _
  