unpack_object_header(): make it public

diff --git a/t/t3210-pack-refs.sh b/t/t3210-pack-refs.sh
index 525174013c4c33eab5bdbde8831d43f1ddbaeaae..cd04361df811d329e269ac1d5eb0b0f03baa74d8 100755 (executable)
--- a/t/t3210-pack-refs.sh
+++ b/t/t3210-pack-refs.sh
@@ -60,6 +60,12 @@ test_expect_success 'see if git pack-refs --prune remove ref files' '
      ! test -f .git/refs/heads/f
 '
 
+test_expect_success 'see if git pack-refs --prune removes empty dirs' '
+     git branch r/s/t &&
+     git pack-refs --all --prune &&
+     ! test -e .git/refs/heads/r
+'
+
 test_expect_success \
     'git branch g should work when git branch g/h has been deleted' \
     'git branch g/h &&