Re: t4151 missing quotes

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Something like this follows Documentation/SubmittingPatches, except
that it further needs your Sign-off before mine, which I can forge
if you say it is OK.

Thanks for a report and an analysis of the issue.

-- >8 --
From: Armin Kunaschik <megabreit@xxxxxxxxxxxxxx>
Subject: t4151: make sure argument to 'test -z' is given

88d50724 (am --skip: revert changes introduced by failed 3way merge,
2015-06-06), unlike all the other patches in the series, forgot to
quote the output from "$(git ls-files -u)" when using it as the
argument to "test -z", leading to a syntax error.

Note that $(git ls-files -u | wc -l) are deliberately left unquoted,
as some implementations of "wc -l" includes extra blank characters
in its output and cannot be compared as string, i.e. "test 0 = $(...)".

Signed-off-by: 
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 t/t4151-am-abort.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t4151-am-abort.sh b/t/t4151-am-abort.sh
index 833e7b2..b878c21 100755
--- a/t/t4151-am-abort.sh
+++ b/t/t4151-am-abort.sh
@@ -82,7 +82,7 @@ test_expect_success 'am -3 --abort removes otherfile-4' '
 	test 4 = "$(cat otherfile-4)" &&
 	git am --abort &&
 	test_cmp_rev initial HEAD &&
-	test -z $(git ls-files -u) &&
+	test -z "$(git ls-files -u)" &&
 	test_path_is_missing otherfile-4
 '
 
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