[PATCH] clear_pattern_list(): clear embedded hashmaps

Commit 96cc8ab531 (sparse-checkout: use hashmaps for cone patterns,
2019-11-21) added some auxiliary hashmaps to the pattern_list struct,
but they're leaked when clear_pattern_list() is called.

Signed-off-by: Jeff King <redacted>
---
I have no idea how often this leak triggers in practice. I just noticed
it while poking at LSan output (which we remain depressingly far
from getting a clean run on).

 dir.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dir.c b/dir.c
index fe64be30ed..9411b94e9b 100644
--- a/dir.c
+++ b/dir.c

@@ -916,6 +916,8 @@ void clear_pattern_list(struct pattern_list *pl)
 		free(pl->patterns[i]);
 	free(pl->patterns);
 	free(pl->filebuf);
+	hashmap_free_entries(&pl->recursive_hashmap, struct pattern_entry, ent);
+	hashmap_free_entries(&pl->parent_hashmap, struct pattern_entry, ent);
 
 	memset(pl, 0, sizeof(*pl));
 }

-- 
2.28.0.596.g9c08d63829