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.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/journals.c b/src/journals.c
index 74c44dd..8211b6f 100644
--- a/src/journals.c
+++ b/src/journals.c
@@ -712,12 +712,12 @@ THUNK_DEFINE(journals_for_each, journals_t **, journals, journal_t **, journal_i
 
 		r = thunk_dispatch_keep(closure);
 		if (r < 0) {
-			free(closure);
+			thunk_free(closure);
 			return r;
 		}
 	}
 
-	free(closure);
+	thunk_free(closure);
 
 	return 0;
 }