libfile: don't leak file descriptors in compare_file

Depending on the state of environment, running

  while saveenv; do true; done

Can quickly lead to:

  saving environment
  could not open /dev/mmc2.barebox-environment: error 24
  saveenv: error 24

Because the leaked file descriptors gobble up the 128 we have
preallocated. Fix this.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20230414152032.3783908-1-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

0 files changed, 0 insertions, 0 deletions