Even more WebUSB sanity checks

Author: harbaum

ftduino/libraries/Ftduino/Ftduino.h

@@ -9,11 +9,11 @@
 
 #include "Arduino.h"
 
-#ifdef IN_FTDUINO_LIB
+#ifndef IN_FTDUINO_LIB
   #if !defined(OUTPUT_DRIVER_MC33879A) && !defined(OUTPUT_DRIVER_AUTO)
     #error "Only the MC33879A or AUTO output drivers are currently supported!"
   #endif
-#else
+
   // make sure WebUSB is being used with correct settings
   #if USB_VERSION == 0x210 && !defined(WebUSB_h)
     #error "Please include WebUSB.h if WebUSB is being used!"

ftduino/libraries/FtduinoSimple/FtduinoSimple.h

@@ -25,7 +25,7 @@
   #else
     #warning "Error, no output driver configured"
   #endif
-#else
+
   // make sure WebUSB is being used with correct settings
   #if USB_VERSION == 0x210 && !defined(WebUSB_h)
     #error "Please include WebUSB.h if WebUSB is being used!"