[WAN]: kfree of NULL pointer is valid

kfree(0) is perfectly valid, checking pointers for NULL before calling 
kfree() on them is redundant. The patch below cleans away a few such 
redundant checks (and while I was around some of those bits I couldn't 
stop myself from making a few tiny whitespace changes as well).

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c
index 5b48cd8..02d57c0 100644
--- a/drivers/net/wan/cycx_x25.c
+++ b/drivers/net/wan/cycx_x25.c
@@ -436,9 +436,7 @@
 	}
 
 	if (err) {
-		if (chan->local_addr)
-			kfree(chan->local_addr);
-
+		kfree(chan->local_addr);
 		kfree(chan);
 		return err;
 	}
@@ -458,9 +456,7 @@
 		struct cycx_x25_channel *chan = dev->priv;
 
 		if (chan->svc) {
-			if (chan->local_addr)
-				kfree(chan->local_addr);
-
+			kfree(chan->local_addr);
 			if (chan->state == WAN_CONNECTED)
 				del_timer(&chan->timer);
 		}