[PATCH 3/3] t3428: restore coverage for "apply" backend

["Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com>]

From: Phillip Wood <phillip.wood@dunelm.org.uk>

This test file assumes the "apply" backend is the default which is not
the case since 2ac0d6273f (rebase: change the default backend from "am"
to "merge", 2020-02-15). Make sure the "apply" backend is tested by
specifying it explicitly.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t3428-rebase-signoff.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/t3428-rebase-signoff.sh b/t/t3428-rebase-signoff.sh
index 133e54114f6..1bebd1ce74a 100755
--- a/t/t3428-rebase-signoff.sh
+++ b/t/t3428-rebase-signoff.sh
@@ -38,8 +38,8 @@ test_expect_success 'setup' '
 
 # We configure an alias to do the rebase --signoff so that
 # on the next subtest we can show that --no-signoff overrides the alias
-test_expect_success 'rebase --signoff adds a sign-off line' '
-	git rbs HEAD^ &&
+test_expect_success 'rebase --apply --signoff adds a sign-off line' '
+	git rbs --apply HEAD^ &&
 	test_commit_message HEAD expected-signed
 '
 
-- 
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