batman-adv: initialise last_ttvn and tt_crc for the orig_node structure

The last_ttvn and tt_crc fields of the orig_node structure were not
initialised causing an immediate TT_REQ/RES dialogue even if not needed.
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

net/batman-adv/originator.c

@@ -223,6 +223,8 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr)
 	orig_node->bat_priv = bat_priv;
 	memcpy(orig_node->orig, addr, ETH_ALEN);
 	orig_node->router = NULL;
+	orig_node->tt_crc = 0;
+	atomic_set(&orig_node->last_ttvn, 0);
 	orig_node->tt_buff = NULL;
 	orig_node->tt_buff_len = 0;
 	atomic_set(&orig_node->tt_size, 0);