[PATCH v2 2/2] t6300: check for cat-file exit status code

["Đoàn Trần Công Danh" <congdanhqx@gmail.com>]

In test_atom(), we're piping the output of cat-file to tail(1),
thus, losing its exit status.

Let's use a temporary file to preserve git exit status code.

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
---
 t/t6300-for-each-ref.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index 93126341b3..cc0f5b6627 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -66,7 +66,9 @@ test_atom() {
 			case $type in
 			tag)
 				# We cannot use $3 as it expects sanitize_pgp to run
-				expect=$(git cat-file tag $ref | tail -n +6 | wc -c) ;;
+				git cat-file tag $ref >out &&
+				expect=$(tail -n +6 <out | wc -c) &&
+				rm -f out ;;
 			tree | blob)
 				expect="" ;;
 			commit)
-- 
2.33.0.rc1