[PATCH 2/2] tests/qtest: vhost-user-test: Fix [-Werror=format-overflow=] build warning

[Bin Meng <bmeng.cn@gmail.com>]

From: Bin Meng <bin.meng@windriver.com>

When tmpfs is NULL, a build warning is seen with GCC 9.3.0.
It's strange that GCC 11.2.0 on Ubuntu 22.04 does not catch this,
neither did the QEMU CI.

Reported-by: Shengjiang Wu <shengjiang.wu@windriver.com>
Fixes: e6efe236c1d1 ("tests/qtest: vhost-user-test: Avoid using hardcoded /tmp")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
---

 tests/qtest/vhost-user-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c
index e8d2da7228..819b87df3c 100644
--- a/tests/qtest/vhost-user-test.c
+++ b/tests/qtest/vhost-user-test.c
@@ -571,7 +571,7 @@ static TestServer *test_server_new(const gchar *name,
 
     tmpfs = g_dir_make_tmp("vhost-test-XXXXXX", &err);
     if (!tmpfs) {
-        g_test_message("g_dir_make_tmp on path (%s): %s", tmpfs,
+        g_test_message("g_dir_make_tmp on path (%s): %s", g_get_tmp_dir(),
                        err->message);
         g_error_free(err);
     }
-- 
2.34.1