shallow: fix leaking members of struct shallow_info

We do not free several struct members in `clear_shallow_info()`. Fix
this to plug the resulting leaks.

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

Author: pks-t

shallow.c

@@ -489,6 +489,15 @@ void prepare_shallow_info(struct shallow_info *info, struct oid_array *sa)
 
 void clear_shallow_info(struct shallow_info *info)
 {
+	if (info->used_shallow) {
+		for (size_t i = 0; i < info->shallow->nr; i++)
+			free(info->used_shallow[i]);
+		free(info->used_shallow);
+	}
+
+	free(info->need_reachability_test);
+	free(info->reachable);
+	free(info->shallow_ref);
 	free(info->ours);
 	free(info->theirs);
 }

t/t5538-push-shallow.sh

@@ -5,6 +5,7 @@ test_description='push from/to a shallow clone'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 commit() {