debug: fix webui headers included without WEB_SUPPORT=1

code/espurna/debug.cpp

@@ -12,14 +12,17 @@ Copyright (C) 2016-2019 by Xose Pérez <xose dot perez at gmail dot com>
 
 #include "settings.h"
 #include "telnet.h"
-#include "web.h"
 #include "ntp.h"
-#include "ws.h"
 
 #include <limits>
 #include <type_traits>
 #include <vector>
 
+#if WEB_SUPPORT
+#include "web.h"
+#include "ws.h"
+#endif
+
 #if DEBUG_WEB_SUPPORT
 #include <ArduinoJson.h>
 #endif