[X25]: use LIST_HEAD instead of LIST_HEAD_INIT

single list_head variable initialized with LIST_HEAD_INIT could almost
always can be replaced with LIST_HEAD declaration, this shrinks the code
and looks better.
Signed-off-by: NDenis Cheng <crquan@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/x25/x25_forward.c

@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <net/x25.h>
 
-struct list_head x25_forward_list = LIST_HEAD_INIT(x25_forward_list);
+LIST_HEAD(x25_forward_list);
 DEFINE_RWLOCK(x25_forward_list_lock);
 
 int x25_forward_call(struct x25_address *dest_addr, struct x25_neigh *from,

net/x25/x25_link.c

@@ -30,7 +30,7 @@
 #include <linux/init.h>
 #include <net/x25.h>
 
-static struct list_head x25_neigh_list = LIST_HEAD_INIT(x25_neigh_list);
+static LIST_HEAD(x25_neigh_list);
 static DEFINE_RWLOCK(x25_neigh_list_lock);
 
 static void x25_t20timer_expiry(unsigned long);

net/x25/x25_route.c

@@ -21,7 +21,7 @@
 #include <linux/init.h>
 #include <net/x25.h>
 
-struct list_head x25_route_list = LIST_HEAD_INIT(x25_route_list);
+LIST_HEAD(x25_route_list);
 DEFINE_RWLOCK(x25_route_list_lock);
 
 /*