Spotted by ASAN.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 qtest.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/qtest.c b/qtest.c
index a6858272eb..5aa6636ca8 100644
--- a/qtest.c
+++ b/qtest.c
@@ -240,6 +240,7 @@ static void GCC_FMT_ATTR(2, 3) qtest_sendf(CharBackend *chr,
     va_start(ap, fmt);
     buffer = g_strdup_vprintf(fmt, ap);
     qtest_send(chr, buffer);
+    g_free(buffer);
     va_end(ap);
 }
 
-- 
2.12.0.rc2.3.gc93709801