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 532ec37865768d05a31606f495b4f0c1645ea757..3130add61815b2abab35ba0b3f1e5413e5c15d14 100644 (file)
--- 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);