Beam Search Decoder with LM (10 gram)
Hi, I am using 10 gram LM (from kenlm). But when I use BeamSearchDecoderLM, I am getting this error:


```
terminate called after throwing an instance of 'lm::FormatLoadException'
  what():  kenlm/lm/vocab.cc:40 in void lm::ngram::{anonymous}::ReadWords(int, lm::EnumerateVocab*, lm::WordIndex, uint64_t) threw FormatLoadException because `memcmp(check_unk, "<unk>", 10)'.
Vocabulary words are in the wrong place.  This could be because the binary file was built with stale gcc and old kenlm.  Stale gcc, including the gcc distributed with RedHat and OS X, has a bug that ignores pragma pack for template-dependent types.  New kenlm works around this, so you'll save memory but have to rebuild any binary files using the probing data structure.
Aborted (core dumped)
```



What can be the problem? @VahidooX  do you have a any suggestions?
