Unset IO disconnect function when we try to destroy GAtPPP instance.
After freeing the instance, the IO disconnect function should not be
invoked.
---
 gatchat/gatppp.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c
index d9b1627..63508b5 100644
--- a/gatchat/gatppp.c
+++ b/gatchat/gatppp.c
@@ -454,6 +454,9 @@ void g_at_ppp_unref(GAtPPP *ppp)
        if (is_zero == FALSE)
                return;
 
+       g_at_io_set_disconnect_function(g_at_hdlc_get_io(ppp->hdlc),
+                                               NULL, NULL);
+
        if (ppp->net)
                ppp_net_free(ppp->net);
 
-- 
1.6.3.3

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