[NET]: kfree cleanup

From: Jesper Juhl <jesper.juhl@gmail.com>

This is the net/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in net/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 73cfc34..4cf8754 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -401,10 +401,8 @@
 	}
 
 	if (dp.ndigi == 0) {
-		if (ax25->digipeat != NULL) {
-			kfree(ax25->digipeat);
-			ax25->digipeat = NULL;
-		}
+		kfree(ax25->digipeat);
+		ax25->digipeat = NULL;
 	} else {
 		/* Reverse the source SABM's path */
 		memcpy(ax25->digipeat, &reverse_dp, sizeof(ax25_digi));