Null check CallList mapping in callbacks

In onPostDialWait, onDetailsChanged, and onConferenceableCallsChanged
callbacks, check to make sure the call list contains a mapping for the
Telecom Call object.

Bug:23031241
Change-Id: I2a9703d9c303fe0b2e320d811d21c71e5c429269
1 file changed
tree: 50f257d4715e496aa7428d263db00c5ec2f2a2b0
  1. InCallUI/