Fix SD compilation error

[tomcombriat]

Trying to compile a simple sketch that includes the SD library for RP2040:

#include <SD.h>
void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

leads to the error:

packages/rp2040/hardware/rp2040/4.0.2/libraries/SDFS/src/SDFS.h:287:31: error: 'using element_type = class File32' {aka 'class File32'} has no member named 'availableSpaceForWrite'; did you mean 'availableForWrite'?
  287 |         return _opened ? _fd->availableSpaceForWrite() : 0;
      |                               ^~~~~~~~~~~~~~~~~~~~~~
      |                               availableForWrite
Multiple libraries were found for "SD.h"
  Used: /home/tom/.arduino15/packages/rp2040/hardware/rp2040/4.0.2/libraries/SD
  Not used: /home/tom/.arduino15/libraries/SD
  Not used: /home/tom/Arduino_sketchbook/libraries/SD
Multiple libraries were found for "SdFat.h"
  Used: /home/tom/Arduino_sketchbook/libraries/SdFat_-_Adafruit_Fork
  Not used: /home/tom/.arduino15/packages/rp2040/hardware/rp2040/4.0.2/libraries/ESP8266SdFat

This PR fixes the error, but I have not tried yet if that is actually the correct fix.

---

I spotted this with a code that used to work does not compile anymore. Let me know if that is caused by a stupid mistake on my side (that has happened before…)

[earlephilhower]

I think you're trying to use SD.h or SDFS or SDFat from outside of the repo. They're not supported here and you need to run the included versions of those libraries.

Used: /home/tom/Arduino_sketchbook/libraries/SdFat_-_Adafruit_Fork

We build SD.h apps in CI for every pull and they are compiling properly.

[tomcombriat]

My bad, indeed I was just compiling using your SdFat while I received your notification. Sorry for the wrong alert, a bit too "trigger happy" on this one…

Closing.