From: Mike Hommey <mh@glandium.org>
Date: Sun, 25 Aug 2019 05:18:18 +0000 (+0900)
Subject: notes: avoid leaking duplicate entries
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/779ad6641b9a6443eaec75439b3374b1a7b8794c?ds=sidebyside

notes: avoid leaking duplicate entries

When add_note is called multiple times with the same key/value pair, the
leaf_node it creates is leaked by notes_tree_insert.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/notes.c b/notes.c
index 532ec37865..3130add618 100644
--- a/notes.c
+++ b/notes.c
@@ -269,8 +269,10 @@ static int note_tree_insert(struct notes_tree *t, struct int_node *tree,
 		case PTR_TYPE_NOTE:
 			if (oideq(&l->key_oid, &entry->key_oid)) {
 				/* skip concatenation if l == entry */
-				if (oideq(&l->val_oid, &entry->val_oid))
+				if (oideq(&l->val_oid, &entry->val_oid)) {
+					free(entry);
 					return 0;
+				}
 
 				ret = combine_notes(&l->val_oid,
 						    &entry->val_oid);