t3404: fix indentation

This test case was added in 66ae9a5 (t3404: rebase -i: demonstrate
short SHA-1 collision, 2013-08-23), and it is not indented in the way we
usually indent sub-shell code in our test cases these days.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3404-rebase-interactive.sh

@@ -1265,11 +1265,11 @@ test_expect_success SHA1 'short SHA-1 collide' '
 	test_when_finished "reset_rebase && git checkout master" &&
 	git checkout collide &&
 	(
-	unset test_tick &&
-	test_tick &&
-	set_fake_editor &&
-	FAKE_COMMIT_MESSAGE="collide2 ac4f2ee" \
-	FAKE_LINES="reword 1 2" git rebase -i HEAD~2
+		unset test_tick &&
+		test_tick &&
+		set_fake_editor &&
+		FAKE_COMMIT_MESSAGE="collide2 ac4f2ee" \
+		FAKE_LINES="reword 1 2" git rebase -i HEAD~2
 	)
 '