fs_driver.py: fix _fs_dir_open_cb for VfsFat #494
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While testing with an SD card that has a FAT filesystem on it, I noticed that, unlike LittleFS, VfsFat returns an [Errno 22] EINVAL when a directory has a trailing slash. This fix removes the trailing slash, except for the root directory.
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While testing with an SD card that has a FAT filesystem on it, I noticed that, unlike LittleFS, VfsFat returns an [Errno 22] EINVAL when a directory has a trailing slash.
This fix removes the trailing slash, except for the root directory.