commit-reach: fix trivial memory leak when computing reachability

We don't free the local `stack` commit list that we use to compute
reachability of multiple commits at once. Do so.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/commit-reach.c b/commit-reach.c
index dabc2972e4..02f8218b8e 100644
--- a/commit-reach.c
+++ b/commit-reach.c
@@ -1227,4 +1227,5 @@ void tips_reachable_from_bases(struct repository *r,
 done:
 	free(commits);
 	repo_clear_commit_marks(r, SEEN);
+	free_commit_list(stack);
 }