We don't need to see how git will be executed and it produces non silent
output on 'scripts/env diff' commands when there are no differences
unlike before.
Re-introduce original silent behaviour.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Fixes following shellcheck warning:
In scripts/env line 25:
exit ${1:-1}
^-----^ SC2086: Double quote to prevent globbing and word splitting.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
