Merge branch 'al/t2400-depipe'

Coding style fix.

* al/t2400-depipe:
  t2400: avoid losing exit status to pipes

Author: gitster

t/t2400-worktree-add.sh

@@ -490,7 +490,8 @@ 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
 	)
 '
 
@@ -531,7 +532,8 @@ 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
 	)