[Outreachy][PATCH v3] t2400: avoid using pipes

[Achu Luma <ach.lumap@gmail.com>]

The exit code of the preceding command in a pipe is disregarded,
so it's advisable to refrain from relying on it. Instead, by
saving the output of a Git command to a file, we gain the
ability to examine the exit codes of both commands separately.

Signed-off-by: Achu Luma <ach.lumap@gmail.com>
---
 Since v2 I don't send a cover  letter anymore, and I changed 
 my "Signed-of-by: ..." line so that it
 contains my full real name and I added "Outreachy" to the subject.

 t/t2400-worktree-add.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/t/t2400-worktree-add.sh b/t/t2400-worktree-add.sh
index df4aff7825..7ead05bb98 100755
--- a/t/t2400-worktree-add.sh
+++ b/t/t2400-worktree-add.sh
@@ -468,7 +468,8 @@ test_expect_success 'put a worktree under rebase' '
 		cd under-rebase &&
 		set_fake_editor &&
 		FAKE_LINES="edit 1" git rebase -i HEAD^ &&
-		git worktree list | grep "under-rebase.*detached HEAD"
+		git worktree list >actual && 
+		grep "under-rebase.*detached HEAD" actual
 	)
 '
 
@@ -509,7 +510,8 @@ test_expect_success 'checkout a branch under bisect' '
 		git bisect start &&
 		git bisect bad &&
 		git bisect good HEAD~2 &&
-		git worktree list | grep "under-bisect.*detached HEAD" &&
+		git worktree list >actual && 
+		grep "under-bisect.*detached HEAD" actual &&
 		test_must_fail git worktree add new-bisect under-bisect &&
 		! test -d new-bisect
 	)
-- 
2.41.0.windows.1