Make sure onDisconnect also notifies single-call listener.

onDisconnect was not notifying listeners interested in a single call.
In this case, it wasn't notifying the answer presenter.

bug: 10678095
Change-Id: I81a7205eb886e136184c5754b0caebd68ac86031
1 file changed
tree: 7b08133b835e6d7213178eb1aff9d44b8f534020
  1. InCallUI/