If a diff we compute for --changed-path has more than 512 entries, we
don't bother generating a bloom filter for it. But since we don't
iterate over diff_queued_diff, we also don't free the filepairs and
filespecs from the diff before clearing the queue. Let's make sure we do
so.

This drops the peak heap usage of "commit-graph write --changed-paths"
on linux.git from ~8GB to ~4GB.

Signed-off-by: Jeff King <redacted>
---
 bloom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bloom.c b/bloom.c
index 0c7505d3d6..d1d3796e11 100644
--- a/bloom.c
+++ b/bloom.c

@@ -226,6 +226,8 @@ struct bloom_filter *get_bloom_filter(struct repository *r,
 
 		hashmap_free_entries(&pathmap, struct pathmap_hash_entry, entry);
 	} else {
+		for (i = 0; i < diff_queued_diff.nr; i++)
+			diff_free_filepair(diff_queued_diff.queue[i]);
 		filter->data = NULL;
 		filter->len = 0;
 	}

-- 
2.24.1.1152.gda0b849012