tree b8b095707a6020a19c97a78cb58ac2b7dde33c61
parent 59e8aa350326d1b891747da493e7c0838c36c96c
author Grace Jia <xiaotonj@google.com> 1617982381 -0700
committer Grace Jia <xiaotonj@google.com> 1617982381 -0700

Fix NPE in DialerCall that cause it crash and failed to show
disconnection error message.

Bug: 184662292
Test: Manual test to guarantee the error message
Change-Id: I29ad67fdbe66a4ee246d3ecbaf0967e9f89df6cf