Handle null bindings returned from ConnectionService.
When a ConnectionService returns a null binding, immediately unbind from
the ConnectionService and cancel any ongoing calls related to it.
Test: Added new CTS test to verify auto unbind from null binding ConnectionService.
Test: Manually tested using test app which implements null binding ConnectionService and verified via telecom log inspection that the service is unbound and the call is terminated.
(cherry picked from commit 410ce026004bb485c39afcc7d86e89d26ff1af94)
1 file changed