dir.c: don't flag the index as dirty for changes to the untracked cache

diff --git a/t/t7063-status-untracked-cache.sh b/t/t7063-status-untracked-cache.sh
index e5fb892f9575fda4baf0b2a0e6b31cf13a0d6c0b..6ef520e8237dbad4365eab057149678ba1221dba 100755 (executable)
--- a/t/t7063-status-untracked-cache.sh
+++ b/t/t7063-status-untracked-cache.sh
@@ -14,6 +14,9 @@ test_description='test untracked cache'
 # See <20160803174522.5571-1-pclouds@gmail.com> if you want to know
 # more.
 
+GIT_TEST_UNTRACKED_CACHE=true
+export GIT_TEST_UNTRACKED_CACHE
+
 sync_mtime () {
        find . -type d -ls >/dev/null
 }