revision: fix leaking bloom filters

The memory allocated by `prepare_to_use_bloom_filter()` is not released
by `release_revisions()`, causing a memory leak. Plug it.

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

revision.c

@@ -3227,6 +3227,11 @@ void release_revisions(struct rev_info *revs)
 	clear_decoration(&revs->treesame, free);
 	line_log_free(revs);
 	oidset_clear(&revs->missing_commits);
+
+	for (int i = 0; i < revs->bloom_keys_nr; i++)
+		clear_bloom_key(&revs->bloom_keys[i]);
+	FREE_AND_NULL(revs->bloom_keys);
+	revs->bloom_keys_nr = 0;
 }
 
 static void add_child(struct rev_info *revs, struct commit *parent, struct commit *child)

t/t4216-log-bloom.sh

@@ -4,6 +4,7 @@ test_description='git log for a path with Bloom filters'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-chunk.sh