Fix make_absolute_path() for parameters without a slash

diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh
index 877c1ea5db4b99f088db6f5e38a6833abc3cfef5..a32692417db73444dbdc143e6908b7371be79d42 100755 (executable)
--- a/t/t4001-diff-rename.sh
+++ b/t/t4001-diff-rename.sh
@@ -27,7 +27,7 @@ Line 15
 '
 
 test_expect_success \
-    'update-cache --add a file.' \
+    'update-index --add a file.' \
     'git update-index --add path0'
 
 test_expect_success \