Fix crash in sntp.sync()
@@ -806,7 +806,7 @@ static int sntp_sync (lua_State *L)
} else if (server_count == 0) {
lua_newtable(L);
struct netif *iface = (struct netif *)eagle_lwip_getif(0x00);
- if (iface->dhcp && iface->dhcp->offered_ntp_addr.addr) {
+ if (iface && iface->dhcp && iface->dhcp->offered_ntp_addr.addr) {
ip_addr_t ntp_addr = iface->dhcp->offered_ntp_addr;
lua_pushinteger(L, 1);
lua_pushstring(L, inet_ntoa(ntp_addr));
