Comment 2 for bug 737713

StacktraceTop:
 provider_cancel_secrets (provider=0xe2a4b0, user_data=0xe2f040) at nm-manager.c:2587
 g_closure_invoke (closure=0xe2c2e0, return_value=0x0, n_param_values=1, param_values=0xe7d7a0, invocation_hint=0x7fff19ea0570) at /build/buildd/glib2.0-2.28.3/./gobject/gclosure.c:767
 signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0xe2a4b0, emission_return=0x0, instance_and_params=0xe7d7a0) at /build/buildd/glib2.0-2.28.3/./gobject/gsignal.c:3252
 g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=<value optimized out>) at /build/buildd/glib2.0-2.28.3/./gobject/gsignal.c:2983
 g_signal_emit_by_name (instance=0xe2a4b0, detailed_signal=0x48e7ec "manager-cancel-secrets") at /build/buildd/glib2.0-2.28.3/./gobject/gsignal.c:3077