[SUNRPC]: Use k{mem,str}dup where applicable

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 325e72e..754b8cd 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -70,10 +70,9 @@
 	q = (const void *)((const char *)p + len);
 	if (unlikely(q > end || q < p))
 		return ERR_PTR(-EFAULT);
-	res->data = kmalloc(len, GFP_KERNEL);
+	res->data = kmemdup(p, len, GFP_KERNEL);
 	if (unlikely(res->data == NULL))
 		return ERR_PTR(-ENOMEM);
-	memcpy(res->data, p, len);
 	res->len = len;
 	return q;
 }