util/gitconfig: Replace subshells with braces

The check for `user.name` and `user.email` being set is done in
`gitconfig.sh` and it uses two subshells where none is actually needed.
Stream redirection can be consolidated.

Change-Id: Ia1d19eb3c11f9d11f030dcc179bc175956cd7116
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23250
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions