batman-adv: Remove needless init of variables on stack

Some variables are overwritten immediatelly in a functions. These don't
have to be initialized to a specific value on the stack because the value
will be overwritten before they will be used anywhere.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 5f3bfc4..6af87c9 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -364,7 +364,7 @@
 batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
 		       struct batadv_hard_iface *if_outgoing)
 {
-	struct batadv_orig_ifinfo *orig_ifinfo = NULL;
+	struct batadv_orig_ifinfo *orig_ifinfo;
 	unsigned long reset_time;
 
 	spin_lock_bh(&orig_node->neigh_list_lock);
@@ -520,7 +520,7 @@
 			   const u8 *neigh_addr)
 {
 	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
-	struct batadv_hardif_neigh_node *hardif_neigh = NULL;
+	struct batadv_hardif_neigh_node *hardif_neigh;
 
 	spin_lock_bh(&hard_iface->neigh_list_lock);
 
@@ -563,7 +563,7 @@
 batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface,
 				  const u8 *neigh_addr)
 {
-	struct batadv_hardif_neigh_node *hardif_neigh = NULL;
+	struct batadv_hardif_neigh_node *hardif_neigh;
 
 	/* first check without locking to avoid the overhead */
 	hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr);
@@ -683,7 +683,7 @@
 				struct batadv_hard_iface *hard_iface,
 				const u8 *neigh_addr)
 {
-	struct batadv_neigh_node *neigh_node = NULL;
+	struct batadv_neigh_node *neigh_node;
 
 	/* first check without locking to avoid the overhead */
 	neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr);