thunk_h: bump submodule for and use thunk_free()

thunk.h got some rudimentary environment caching, and in the
process introduced thunk_free().

Update the submodule and replace the bare free(closure) callsites
with thunk_free(closure).

This should help reduce the amount of malloc/free hammering in jio,
though there are still quite a few allocations for object payloads
in e.g. report-entry-arrays, and the object header space is allocated
as a thunk payload which doesn't get environment caching yet.

0 files changed, 0 insertions, 0 deletions