subtree test: add missing && to &&-chain

Detected using t/chainlint.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/subtree/t/t7900-subtree.sh b/contrib/subtree/t/t7900-subtree.sh
index d05c613..e6a28f2 100755 (executable)
--- a/contrib/subtree/t/t7900-subtree.sh
+++ b/contrib/subtree/t/t7900-subtree.sh
@@ -708,7 +708,7 @@ test_expect_success 'make sure each filename changed exactly once in the entire
        test_create_commit "$subtree_test_count/sub proj" sub1 &&
        (
                cd "$subtree_test_count" &&
-               git config log.date relative
+               git config log.date relative &&
                git fetch ./"sub proj" master &&
                git subtree add --prefix="sub dir" FETCH_HEAD
        ) &&