Merge branch 'ot/ref-filter-plug-leaks'

Plugging a handful of memory leaks in the ref-filter codepath.

* ot/ref-filter-plug-leaks:
ref-filter: free item->value and item->value->s
ls-remote: release memory instead of UNLEAK
ref-filter: free memory from used_atom

diff --cc ref-filter.c
Simple merge