[NET]: Remove more unneeded typecasts on *malloc()

This removes more unneeded casts on the return value for kmalloc(),
sock_kmalloc(), and vmalloc().

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/lec.c b/net/atm/lec.c
index eea0513..93ce390 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -1811,8 +1811,7 @@
 {
         struct lec_arp_table *to_return;
 
-        to_return = (struct lec_arp_table *) kmalloc(sizeof(struct lec_arp_table),
-						     GFP_ATOMIC);
+        to_return = kmalloc(sizeof(struct lec_arp_table), GFP_ATOMIC);
         if (!to_return) {
                 printk("LEC: Arp entry kmalloc failed\n");
                 return NULL;