[PULL 04/13] io: release active GSource in TLS channel finalizer

["Daniel P. Berrangé" <berrange@redhat.com>]

While code is supposed to call qio_channel_close() before releasing the
last reference on an QIOChannel, this is not guaranteed. QIOChannelFile
and QIOChannelSocket both cleanup resources in their finalizer if the
close operation was missed.

This ensures the TLS channel will do the same failsafe cleanup.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 io/channel-tls.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/io/channel-tls.c b/io/channel-tls.c
index 70fad38d18..ce041795c1 100644
--- a/io/channel-tls.c
+++ b/io/channel-tls.c
@@ -342,6 +342,16 @@ static void qio_channel_tls_finalize(Object *obj)
 {
     QIOChannelTLS *ioc = QIO_CHANNEL_TLS(obj);
 
+    if (ioc->hs_ioc_tag) {
+        trace_qio_channel_tls_handshake_cancel(ioc);
+        g_clear_handle_id(&ioc->hs_ioc_tag, g_source_remove);
+    }
+
+    if (ioc->bye_ioc_tag) {
+        trace_qio_channel_tls_bye_cancel(ioc);
+        g_clear_handle_id(&ioc->bye_ioc_tag, g_source_remove);
+    }
+
     object_unref(OBJECT(ioc->master));
     qcrypto_tls_session_free(ioc->session);
 }
-- 
2.50.1