Fix bug in last commit to GC sharer. This was meant to avoid rescanning large vectors from the start but had a bug that meant that it omitted some words from the scan.
Fix bug in last commit to GC sharer.
This was meant to avoid rescanning large vectors from the start but had a
bug that meant that it omitted some words from the scan.

polyml/polyml,dcjm/polyml,polyml/polyml,dcjm/polyml,dcjm/polyml,polyml/polyml,dcjm/polyml,polyml/polyml