Fix null precondition check.

Precondition was making sure call was not null.  But the call could be null in
cases where the call disconnected before the UI comes up.  In this case, we can
simply skip processing.

Bug: 10538437
Change-Id: Ia4ff093f38cdc32bdaf6325d9dc770b302d0060b
1 file changed
tree: e8b08e11753744f94ba6d8e673e5ce8b22b1b066
  1. InCallUI/