rebase: fix regression in rebase.useBuiltin=false test mode

diff --git a/t/t9303-fast-import-compression.sh b/t/t9303-fast-import-compression.sh
index 856219f46a7fc47332789d66a13f6fd4603520cb..5045f02a5331fcf4cb3973e81cff22620f0ad628 100755 (executable)
--- a/t/t9303-fast-import-compression.sh
+++ b/t/t9303-fast-import-compression.sh
@@ -6,7 +6,7 @@ test_description='compression setting of fast-import utility'
 # 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"
 }
 
 import_large () {