message: NOBUG no-simd compression fix
diff: -use common::bitpacker::compute_num_bits;
  +use common::compute_num_bits;
  use common::bitpacker::{BitPacker, BitUnpacker};
  use common::CountingWriter;
  use std::cmp;
  @@ -30,7 +30,7 @@ pub fn compress_sorted(vals: &mut [u32], output: &mut [u8], offset: u32) -> usiz
  .unwrap();
  }
  let compressed_size = counting_writer.written_bytes();
  - assert_eq!(compressed_size, compute_block_size(num_bits));
  + assert_eq!(compressed_size, compressed_block_size(num_bits));
  compressed_size
  }
  @@ -112,14 +112,14 @@ impl BlockDecoder {
  ) -> usize {
  let consumed_size = {
  let num_bits = compressed_data[0];
  - let bit_unpacker = BitUnpacker::new(&compressed_data[1..], num_bits as usize);
  + let bit_unpacker = BitUnpacker::new(&compressed_data[1..], num_bits);
  for i in 0..COMPRESSION_BLOCK_SIZE {
  let delta = bit_unpacker.get(i);
  let val = offset + delta as u32;
  self.output[i] = val;
  offset = val;
  }
  - compute_block_size(num_bits)
  + compressed_block_size(num_bits)
  };
  self.output_len = COMPRESSION_BLOCK_SIZE;
  consumed_size
  @@ -127,7 +127,7 @@ impl BlockDecoder {
  pub fn uncompress_block_unsorted<'a>(&mut self, compressed_data: &'a [u8]) -> usize {
  let num_bits = compressed_data[0];
  - let bit_unpacker = BitUnpacker::new(&compressed_data[1..], num_bits as usize);
  + let bit_unpacker = BitUnpacker::new(&compressed_data[1..], num_bits);
  for i in 0..COMPRESSION_BLOCK_SIZE {
  self.output[i] = bit_unpacker.get(i) as u32;
  }
  