bug#47596: File descriptor error when exiting emacs on android 11

[Henrik Grimler]

Hi again,

Enh at google suggested [1] that `setlinebuf (stderr)` could be an
alternative instead of opening a copy of stderr.  I tried out the
attached patch, which removes the buferr variable and uses setlinebuf
on stderr instead, and it seem to work (in the sense that emacs opens
and closes without errors) on archlinux as well as android. 

Could this work or do we need to have both buferr and stderr?

Best regards,
Henrik Grimler

[1] https://issuetracker.google.com/issues/184380442

line_buffered_stderr.patch
Description: Text Data