fix(rust_indexer): copy the language field when converting VNames (#5069)
fix(rust_indexer): copy the language field when converting VNames (#5069)


kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe