[PATCH 2/2] object: fix leak of shallow_stat

[Josh Steadmon]

In eee4502baaf ("shallow: migrate shallow information into the object
parser", 2018-05-17), we added a stat_validity pointer into the
parsed_object_pool struct, but did not add code to free this in
parsed_object_pool_clear(). This leak was found by fuzz-commit-graph.

Clear the struct and then free it in parsed_object_pool_clear() to
prevent the leak.

Signed-off-by: Josh Steadmon <stead...@google.com>
---
 object.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/object.c b/object.c
index 5dc5eec367..ca0b093c37 100644
--- a/object.c
+++ b/object.c
@@ -557,9 +557,11 @@ void parsed_object_pool_clear(struct parsed_object_pool *o)
        clear_alloc_state(o->commit_state);
        clear_alloc_state(o->tag_state);
        clear_alloc_state(o->object_state);
+       stat_validity_clear(o->shallow_stat);
        FREE_AND_NULL(o->blob_state);
        FREE_AND_NULL(o->tree_state);
        FREE_AND_NULL(o->commit_state);
        FREE_AND_NULL(o->tag_state);
        FREE_AND_NULL(o->object_state);
+       FREE_AND_NULL(o->shallow_stat);
 }
-- 
2.20.1.611.gfbb209baf1-goog