don't complain about button pin = -1

wled00/set.cpp

@@ -174,7 +174,7 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
         if (((buttonType[i] == BTN_TYPE_ANALOG) || (buttonType[i] == BTN_TYPE_ANALOG_INVERTED)) && (digitalPinToAnalogChannel(btnPin[i]) < 0)) 
         {
           // not an ADC analog pin
-          DEBUG_PRINTF("PIN ALLOC error: GPIO%d for analog button #%d is not an analog pin!\n", btnPin[i], i);
+          if (btnPin[i] >= 0) DEBUG_PRINTF("PIN ALLOC error: GPIO%d for analog button #%d is not an analog pin!\n", btnPin[i], i);
           btnPin[i] = -1;
           pinManager.deallocatePin(hw_btn_pin,PinOwner::Button);
         }