message: FIXUP
  Remove too-zealous check on bit numbers
diff: @@ -184,8 +184,8 @@ struct PathIndexShard: public PathIndexMetadata {
  chunkBits = MLDB::highest_bit(numChunks, -1) + 1;
  offsetBits = MLDB::highest_bit(maxChunkSize - 1, -1) + 1;
  - ExcAssertGreater(chunkBits, 0);
  - ExcAssertGreater(offsetBits, 0);
  + //ExcAssertGreater(chunkBits, 0);
  + //ExcAssertGreater(offsetBits, 0);
  // Create a hash that's 50% full at the end, by doubling the
  // size. We want to leave plenty of space since we handle
  