Missing CallRemoved signals

[Mikel Astiz <mikel.astiz@bmw-carit.de>]

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Hi all,

I'm doing further tests with oFono with a simple UI that handles the 
calls of a certain modem (bluetooth modem in this case).

I keep track of the existing calls by listening to 'VoiceCallManager' 
signals, 'CallAdded' and 'CallRemoved'. The list is initialized using 
'VoiceCallManager.GetCalls()' at startup.

The problem I have found is that some 'CallRemoved' signals are 
apparently never emitted. It is in fact quite easy to reproduce, if a 
modem is powered down while a call is in progress.

Having a look at oFono's source code (src/voicecall.c), my feeling is 
that some calls to 'voicecall_dbus_unregister' are not accompanied by a 
call to 'voicecalls_emit_call_removed', inside the function 
'voicecall_unregister'.

Could anyone confirm if this is a bug in oFono or suggest any workaround 
for the client app?

Regards,
Mikel