[PATCH 3/3] config tests: fix harmless but broken "rm -r" cleanup

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

The "test_when_finished" cleanup phase added in 4179b4897f2 (config:
allow overriding of global and system configuration, 2021-04-19) has
never worked as intended, firstly the ".config/git" is a directory, so
we'd need the "-r" flag, but more importantly the $HOME variable
wasn't properly quoted.

We'd thus end up trying to remove the "trash" part of "trash
directory", which wouldn't fail with "-f", since "rm -f" won't fail on
non-existing files.

It's possible that this would have caused an actual failure if someone
had a $HOME with a space character in it, such that our "rm -f" would
fail to remove an existing directory, but in practice that probably
never happened.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/t1300-config.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index d3d9adbb3db..da4d03813f1 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -2083,7 +2083,7 @@ test_expect_success '--show-scope with --show-origin' '
 '
 
 test_expect_success 'override global and system config' '
-	test_when_finished rm -f "$HOME"/.config/git &&
+	test_when_finished "rm -rf \"$HOME\"/.config/git" &&
 
 	cat >"$HOME"/.gitconfig <<-EOF &&
 	[home]
-- 
2.36.1.1239.gfba91521d90