[PATCH V2] vhost-user-test: fix a memory leak

[pannengyuan]

From: Pan Nengyuan <pannengy...@huawei.com>

Spotted by ASAN.

Reported-by: Euler Robot <euler.ro...@huawei.com>
Signed-off-by: Pan Nengyuan <pannengy...@huawei.com>
---
Changes V2 to V1:
- use a "goto cleanup", instead of duplicating the "free" functions.
- free "dest_cmdline" at the end.
---
 tests/vhost-user-test.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index 91ea373..dcb8617 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -717,7 +717,7 @@ static void test_migrate(void *obj, void *arg, 
QGuestAllocator *alloc)
     guint64 size;
 
     if (!wait_for_fds(s)) {
-        return;
+        goto cleanup;
     }
 
     size = get_log_size(s);
@@ -776,8 +776,11 @@ static void test_migrate(void *obj, void *arg, 
QGuestAllocator *alloc)
     g_source_unref(source);
 
     qtest_quit(to);
+
+ cleanup:
     test_server_free(dest);
     g_free(uri);
+    g_string_free(dest_cmdline, true);
 }
 
 static void wait_for_rings_started(TestServer *s, size_t count)
-- 
2.7.2.windows.1