From 9048a7f021a0c3ca9f16da5603b50396d1ca5be3 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Wed, 18 Feb 2015 09:02:37 +0100
Subject: [PATCH] fixed compiler warning in dhcp.c

---
 src/core/dhcp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/dhcp.c b/src/core/dhcp.c
index ec9fd650..aafe6fe3 100644
--- a/src/core/dhcp.c
+++ b/src/core/dhcp.c
@@ -530,11 +530,12 @@ static void
 dhcp_handle_ack(struct netif *netif)
 {
   struct dhcp *dhcp = netif->dhcp;
+#if LWIP_DNS || LWIP_DHCP_GET_NTP_SRV
   u8_t n;
+#endif /* LWIP_DNS || LWIP_DHCP_GET_NTP_SRV */
 #if LWIP_DHCP_GET_NTP_SRV
   ip_addr_t ntp_server_addrs[LWIP_DHCP_MAX_NTP_SERVERS];
 #endif
-  LWIP_UNUSED_ARG(n);
 
   /* clear options we might not get from the ACK */
   ip_addr_set_zero(&dhcp->offered_sn_mask);