test-ref-store: avoid passing NULL to printf

diff --git a/t/t4202-log.sh b/t/t4202-log.sh
index 3f3531f0a49be39e29b20a36a55f0d27f04b4fc8..8f155da7a50a657db9fd092e24639f67cd03cd24 100755 (executable)
--- a/t/t4202-log.sh
+++ b/t/t4202-log.sh
@@ -750,7 +750,7 @@ test_expect_success 'log.decorate config parsing' '
 '
 
 test_expect_success TTY 'log output on a TTY' '
-       git log --oneline --decorate >expect.short &&
+       git log --color --oneline --decorate >expect.short &&
 
        test_terminal git log --oneline >actual &&
        test_cmp expect.short actual
@@ -1523,6 +1523,12 @@ test_expect_success 'log diagnoses bogus HEAD' '
        test_i18ngrep broken stderr
 '
 
+test_expect_success 'log does not default to HEAD when rev input is given' '
+       >expect &&
+       git log --branches=does-not-exist >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'set up --source tests' '
        git checkout --orphan source-a &&
        test_commit one &&