[RESEND][PATCH] multifd/tls: fix memoryleak of the QIOChannelSocket object when canceling migration

[Chuan Zheng]

When creating new tls client, the tioc->master will be referenced, we need 
dereferenced
it after tls handshake.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
---
 migration/multifd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/migration/multifd.c b/migration/multifd.c
index 68b171f..df76a8e 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -728,7 +728,8 @@ static void multifd_tls_outgoing_handshake(QIOTask *task,
                                            gpointer opaque)
 {
     MultiFDSendParams *p = opaque;
-    QIOChannel *ioc = QIO_CHANNEL(qio_task_get_source(task));
+    QIOChannelTLS *tioc = QIO_CHANNEL_TLS(qio_task_get_source(task));
+    QIOChannel *ioc = QIO_CHANNEL(tioc);
     Error *err = NULL;
 
     if (qio_task_propagate_error(task, &err)) {
@@ -737,6 +738,7 @@ static void multifd_tls_outgoing_handshake(QIOTask *task,
         trace_multifd_tls_outgoing_handshake_complete(ioc);
     }
     multifd_channel_connect(p, ioc, err);
+    object_unref(OBJECT(tioc->master));
 }
 
 static void multifd_tls_channel_connect(MultiFDSendParams *p,
-- 
1.8.3.1