[Minor] Do not read extra byte of garbadge

Found by: coverity scan

diff --git a/src/lua/lua_url.c b/src/lua/lua_url.c
index f8c81cb93a137209a63fdcd62544e74926678aec..3298c7bed9d73ea76f136f8a8d1a20c8daa5efd4 100644 (file)
--- a/src/lua/lua_url.c
+++ b/src/lua/lua_url.c
@@ -1336,7 +1336,7 @@ lua_url_cbdata_dtor (struct lua_tree_cb_data *cbd)
 
 gsize
 lua_url_adjust_skip_prob (gdouble timestamp,
-                                                 guchar *digest,
+                                                 guchar digest[16],
                                                  struct lua_tree_cb_data *cb,
                                                  gsize sz)
 {
@@ -1346,10 +1346,10 @@ lua_url_adjust_skip_prob (gdouble timestamp,
                 * Use task dependent probabilistic seed to ensure that
                 * consequent task:get_urls return the same list of urls
                 */
+               memset (cb->xoroshiro_state, 0, sizeof (cb->xoroshiro_state));
                memcpy (&cb->xoroshiro_state[0], &timestamp,
                                MIN (sizeof (cb->xoroshiro_state[0]), sizeof (timestamp)));
-               memcpy (&cb->xoroshiro_state[1], digest,
-                               sizeof (cb->xoroshiro_state[1]) * 3);
+               memcpy (&cb->xoroshiro_state[1], digest, 16);
                sz = cb->max_urls;
        }