credential: let helpers tell us to quit

diff --git a/t/t4119-apply-config.sh b/t/t4119-apply-config.sh
index be325fa1aee086a94ece935129cc96e897d9d4e3..a9a05838119c85bc017f1404b134d393029843b2 100755 (executable)
--- a/t/t4119-apply-config.sh
+++ b/t/t4119-apply-config.sh
@@ -68,7 +68,7 @@ test_expect_success 'apply --whitespace=strip from config' '
        check_result sub/file1
 '
 
-D=`pwd`
+D=$(pwd)
 
 test_expect_success 'apply --whitespace=strip in subdir' '