test-dir-iterator: do not assume errno values

diff --git a/t/t5315-pack-objects-compression.sh b/t/t5315-pack-objects-compression.sh
index 34c47dae09966bb3b1de8178769b078509625b1e..df970d75845e782980835d853176acb580ab70d4 100755 (executable)
--- a/t/t5315-pack-objects-compression.sh
+++ b/t/t5315-pack-objects-compression.sh
@@ -7,7 +7,7 @@ test_description='pack-object compression configuration'
 # This should be moved to test-lib.sh together with the
 # copy in t0021 after both topics have graduated to 'master'.
 file_size () {
-       perl -e 'print -s $ARGV[0]' "$1"
+       test-tool path-utils file-size "$1"
 }
 
 test_expect_success setup '