OCT 修正编译宏错误

srcs/vcpe_main.c

@@ -46,7 +46,7 @@ int main(int argc, char **argv) {
 
 #ifdef OPENDHCPDDNS_ON
     return dual_server_main(argc, argv);
-#elif OPENDHCPDDNS
+#elif OPENDHCPD_ON
     return dhcpd_main(argc, argv);
 #else
     uv_setup_args(argc, argv);