test-mountpoint-util: fix NULL arg to %s

diff --git a/src/test/test-mountpoint-util.c b/src/test/test-mountpoint-util.c
index 6f9e68f4d99297708ad3ec2c10070c52c2dca625..6daab022aa15cc7cf8b9afdc8deb562f4c8b3fed 100644 (file)
--- a/src/test/test-mountpoint-util.c
+++ b/src/test/test-mountpoint-util.c
@@ -20,7 +20,7 @@
 static void test_mount_propagation_flags_one(const char *name, int ret, unsigned long expected) {
         unsigned long flags;
 
-        log_info("/* %s(%s) */", __func__, name);
+        log_info("/* %s(%s) */", __func__, strnull(name));
 
         assert_se(mount_propagation_flags_from_string(name, &flags) == ret);