File dhcpv6-1.0.22-memleak-fix of Package dhcpv6

From: Jeff Mahoney <jeffm@suse.com>
Subject: dhcpv6: fix memory leak in hash creation
References: bnc#535107

 If there is a collision after allocating a hash node, it
 returns HASH_COLLISION without freeing the node.

 This patch frees it properly.

---
 src/hash.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/src/hash.c
+++ b/src/hash.c
@@ -68,8 +68,8 @@ struct hash_table *hash_table_create(uns
 int hash_add(struct hash_table *hash_tbl, const void *key, void *data) {
     int index;
     struct hashlist_element *element;
-    element =
-        (struct hashlist_element *) malloc(sizeof(struct hashlist_element));
+
+    element = (struct hashlist_element *) malloc(sizeof(*element));
     if (!element) {
         dhcpv6_dprintf(LOG_ERR, "Could not malloc hashlist_element");
         return (-1);
@@ -80,6 +80,7 @@ int hash_add(struct hash_table *hash_tbl
     index = hash_tbl->hash_function(key) % hash_tbl->hash_size;
     if (hash_search(hash_tbl, key)) {
         dhcpv6_dprintf(LOG_DEBUG, "hash_add: duplicated item");
+	free(element);
         return HASH_COLLISION;
     }
     element->next = hash_tbl->hash_list[index];