tree f297ce0de0352815f35f8afc53658835e8b444db
parent 1a362967c50e452e865b0ba64c122b76474da3e1
author Sanket Agarwal <sanketa@google.com> 1486678475 -0800
committer Sanket Agarwal <sanketa@google.com> 1486678616 -0800

Conference calling crash on null call object

After conference call ends there are some NPE happening because the call
is being accessed after getting destroyed. Check that underlying call
object is not NULL

Bug: b/34983172
Test: Hangup conference call from CarKitt
Change-Id: I08bfc5478a4dce4e608d7dc5cf9688b65fbc6637