grep.c: remove implicit dependency on the_index

diff --git a/t/t6018-rev-list-glob.sh b/t/t6018-rev-list-glob.sh
index 02936c2f24aeaa3961bc11c623b7fd25d3280c43..0bf10d0686982418682ff03e3a42ef3a16e2cfb4 100755 (executable)
--- a/t/t6018-rev-list-glob.sh
+++ b/t/t6018-rev-list-glob.sh
@@ -256,7 +256,7 @@ test_expect_success 'rev-list accumulates multiple --exclude' '
 '
 
 test_expect_failure 'rev-list should succeed with empty output on empty stdin' '
-       git rev-list --stdin <expect >actual &&
+       git rev-list --stdin </dev/null >actual &&
        test_must_be_empty actual
 '