Fix devif/ipv4_input.c:405:1: warning: label ‘done’ defined but not used [-Wunused-label]

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Signed-off-by: chao an <anchao@xiaomi.com>

net/arp/arp_ipin.c

@@ -45,6 +45,7 @@
 
 #include <netinet/in.h>
 
+#include <nuttx/net/net.h>
 #include <nuttx/net/netdev.h>
 #include <nuttx/net/arp.h>
 

net/arp/arp_out.c

@@ -47,6 +47,7 @@
 #include <string.h>
 #include <debug.h>
 
+#include <nuttx/net/net.h>
 #include <nuttx/net/netdev.h>
 #include <nuttx/net/arp.h>
 

net/devif/ipv4_input.c

@@ -402,7 +402,10 @@ int ipv4_input(FAR struct net_driver_s *dev)
         goto drop;
     }
 
+#if defined(CONFIG_NET_IPFORWARD) || \
+    (defined(CONFIG_NET_BROADCAST) && defined(NET_UDP_HAVE_STACK))
 done:
+#endif
   if (dev->d_len > 0)
     {
       arp_out(dev);